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    Archived pages: 181 . Archive date: 2013-10.

  • Title: Jarek's Amateur Astronomy Site
    Descriptive info: .. Loading logo.. Loading menu.. Loading menu bottom.. Welcome to Jarek's Amateur Astronomy Site.. What's new.. I have been interested in astronomy and astrophysics since my middle school days, but I wasn't observing anything until relatively recently, i.. e.. 2002.. Observing supplements my "theoretical" interest in astronomy - it would not be so much interesting if I didn't know some about the things I see, and on the other hand seeing adds a "personal touch" to knowledge.. As by profession I am a.. theoretician.. (computational biology at present), and I read about astronomy (and observing) more than I do observe (or image).. You may want to check my.. book resources page.. to see interesting books I have read (no, I am not associated with Amazon in any way other than being a good long time customer).. My practical amateur astronomy journey started in the summer of 2002 with a small 4.. 5 Dobsonian from Orion (SkyQuest 4.. 5), but morphed fast into a serious enterprise.. After approximately a year I added Celestron C9.. 25-SGT, then 80mm piggyback refractor (C80ED) and I was quite happy until I got aperture fever again.. My thoughts slowly focused on the biggest of the Celestron SCTs - the famous 14.. That urge to have bigger and bigger and bigger telescope! I bet you know it very well.. I.. had.. to buy 14 SCT, and so I did, and I am very happy with it.. CGE1400 is a great scope, wonderful optics, excellent mount! It performs very well for visual, with good pointing accuracy.. Many say that C14+C80ED would be too heavy for CGE mount for astrophotography, but for me it works very well in this aspect too (see.. Astrophotography.. section).. C14 is a very versatile imaging platform - wide field with a Hyperstar, medium and high magnification with flatteners/reducers and very high resolution with a barlow(s) for planets.. The only problem was that for each session I had to choose - visual or imaging since I couldn't do both at the same time with one scope.. I like both, so the next step was to buy a second big scope for strictly visual use.. When I built my observatory (see below) I also acquired a purely visual scope - 18 Obsession Classic Dobsonian and C14 became a dedicated imaging scope.. I have also added the second imaging  ...   sensor comparable to Canon 40D or QHY8, to use with narrowband imaging and to produce luminance part for LRGB images with an RGB part supplied from my current color imagers.. This last part materialized in March 2010 in the form of SBIG ST-8300M camera - now it is time for imaging.. I was pretty lucky to live in a place where light pollution is not severe, even though my first house in Ithaca was relatively close to the city I was still able to observe from my backyard's deck, and on a good night limiting magnitude was around 5.. 5 (depending on where I looked, worst part low in the west was probably ~4.. 0).. A big drawback of my backyard observing was my field of view - there were trees around, and my declination limit was about -18.. º.. (and I needed good timing to use this opening!).. However it all changed for the better in the summer of 2008.. We moved to a new house, much farer from the center of Ithaca, where I built a small backyard.. observatory.. ! This is the ultimate in amateur astronomy and my dreams come true.. At my new house the limiting magnitude is 6.. 26 (21.. 27 mag/sq arc sec) and now my declination limit is around -32.. across all southern horizon - I have successfully imaged.. NGC253 galaxy in Sculptor.. ! My observatory houses two permanent scopes: my old C14 , and Orion 10 Newtonian (both on CGE mounts) to be used for imaging only.. I have also added a strictly visual large aperture portable scope: Obsession 18 classic.. Now I can carry out imaging and do visual observing at the same time the same night.. For me it is one of the best advantages of having an observatory.. Well, after all I don't think there are any disadvantages of having an observatory anyway.. maybe except the price.. There are three local web resources I set up and maintain that may be of interest to you.. The first one is a page with information about.. expected cloud coverage for Ithaca, NY.. (based on NOAA) with Sun and Moon data (from U.. S.. Naval Observatory).. The second is an.. overlay of light pollution map.. on Virtual Earth covering Upstate NY and Northern Pennsylvania.. The third is the.. Moon calendar for Ithaca, NY..  ..

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  • Title: Jarek's Amateur Astronomy Site
    Descriptive info: What is new at Jarek's Amateur Astronomy Site.. Thursday 6/7/2012.. I was able to watch 2012 Transit of Venus with a group of friends in Wilson, NY.. It is about 3 hours drive from Ithaca, but since Ithaca was couded out we had no choice - it is a long wait for the next transit.. The trip was fantastic,.. here is how it looked like.. !.. Tuesday 4/10/2012.. The new images keep coming, so maybe this year will be better.. There was full Moon last week so I was only able to do imaging.. There are not that many well placed narrowband targets at this time of the year, but fortunately there are some.. I did Ha/OIII imaging with two nice planetary nebulae:.. M97 (Owl).. and.. NGC2392 (Eskimo).. With both I produced RGB images with synthetic green, and I think they resemble typical RGBs.. I haven't come with a good narrowband targets for Orion 10 Newt, so I tried two open clusters, a bit low in the west, but still high enough:.. M35.. M37.. I got the replacement for Argo Navis, I have carried out initial setup and it works fine.. Now I am ready for clear nights around the new Moon in April.. Tuesday 4/4/2012.. I have finished processing Comet Garradd images obtained with Canon T2i and C14 Hyperstar.. I have made not only.. a still image.. , but also.. 8 second movie.. spanning 2 hours and 28 minutes of comet movement.. I had some problems with equalizing brightness between the frames, but in the end it worked.. My Argo Navis computer has died.. , a delayed effect of a battery that leaked 3 years ago.. I am waiting for a replacement to arrive, hopefully I will get it before the next new Moon.. Monday 3/26/2012.. It has been a year since I have updated this page.. It was a very slow year for astronomy, bad luck with weather and free time available.. Years like that do happen, but nevertheless we do prevail!.. It was not completely bad, I went to Cherry Springs in August 2011, I have also collected some imaging data, but I wasn't even able to process it until after December 2011.. It is hard to update the website when I don't actually do observing or imaging much, and if it happens rarely the website usually stays untouched.. It is changing now.. The number of images (and related objects) grew to the point it is impossible to manage them just using simple Javascript tables, so I wrote a Perl based data management system.. It is more image oriented and allows for simple searches and filtering against object and equipment.. It has been deployed today! Please go and check it out on the.. page.. And please let me know of any problems - surely there are some bugs to fix.. I did produce some images over last year.. The first two from June were good:.. M51 with the supernova.. M101 through 70-300mm lens.. The next ones are from August or later.. M27 narrowband RGB with synthetic green.. (also came our quite good),.. M57 LRGB.. Rosette LRGB.. were done with ST-8300M, Rosette is actually my first LRGB done with the Hyperstar (but it's been shot in 2012 already).. I have done a few wide field shots with 50mm lens and 40D piggybacked on Orion 10 scope:.. Cancer.. ,.. Gemini.. Perseus.. Taurus.. Venus/Moon.. Orion.. (all February-March 2012).. And finally I have traded my QHY8 for a new Canon T2i.. I have self-modified it using.. Gary's online instructions.. and removed all the filters, it was quite easy and went very well.. The first image with T2i is.. NGC7380.. , not yet as good as it should be.. My most recent images are focused on the Solar System: my first.. Venus.. wide field view of Comet C/2009 P1 Garradd.. near Little Dipper and.. close up on the comet.. with C14 Hyperstar and T2i.. I am working on a movie of comet Garradd movement, but i need to first figure out how to calibrate properly all the frames in Photoshop so I can process them with curves and levels automatically.. I have big plans for this year.. I will be also reviewing all pages on this website, updating information where need be.. It will take some time, but in few months all information should be up to date.. Tuesday 3/22/2011.. This winter has been awful for astronomy so far: my last observing and imaging session was on November 10th 2010.. Since then it was either cloudy, or way too cold (generally I don't observe when below 10F), or I have been sick.. Last time (in November!) I have started imaging M76, I collected luminance for it, which I dutifully processed soon after.. And then I waited for the RGB part to happen, and well I guess now it won't happen until the fall 2011.. So I have published it now as.. black-and-white luminance image of M76.. , but I am not giving up - I will have RGB done one day! The weather is already improving, in Ithaca there is a 12-14% chance of clear night in January and February, but it is up to 27% in March and 34% in April.. I hope I will have something new soon!.. Sunday 9/12/2010.. I have just returned from.. Black Forest Star Party.. 2010 in Cherry Springs State Park, PA (if you ever need to drive there with the GPS the address is 4682 Cherry Springs Rd, Coudersport, PA).. It was great! Amazing people, fantastic time! We had a good night on Friday - clouds cleared up just in the evening, but unfortunately Saturday night clouded out.. Well, even one night was very good! I will go there again next year, for sure! I made a few pictures there (of people, not astro.. ), you can see them.. here.. I have measured sky glow there and it came up 21.. 62 mag/(sq arc sec), which is equivalent to about limiting magnitude of 6.. 44 (added to.. my sky pollution map.. ), it doesn't sound that high - there is a place near South Danby, NY which measured limiting magnitude of 6.. 43, but in Cherry Springs there are no light domes anywhere so.. the entire sky.. is as good as 6.. 44.. Monday 7/20/2010.. I have finally finished processing all my Cat's Eye Nebula (NGC6543) data.. I have previously obtained.. Hubble palette image of NGC6543.. core, now I added.. NGC6543 outer shell.. , also in Hubble palette.. The shell is very faint, and therefore the core is burned out on this image.. The composite image done with layer masks in Photoshop merges the two:.. Cat's Eye narrowband composite.. It was not easy to obtain, and probably I should spend more time collecting data, but the weather did not allowed that.. And now I would like to try the other objects too.. A couple of weeks ago I tried to shoot luminance part for M57 image.. The evening was very hot, but later it started to cool down quite fast, I think the total temperature difference between the beginning and the end of the session was around 20F.. It caused a significant shrinkage of my C14 tube resulting in a loss of focus.. Instead of producing a beautiful luminance for M57 I produced a video of thermally induced defocusing of an SCT.. Interesting study, but not what I had in mind.. You can see the video on.. this page.. Sunday 7/19/2010..  ...   Hubble palette imaging took 3 nights during full Moon in September:.. Pelican.. Crescent.. nebulae.. Other interesting new objects imaged are.. M27.. Veil Nebula.. M16 (mixed mode).. Cocoon Nebula.. Gamma Cygni Nebula.. Pacman Nebula.. I was also able to image two objects low in the south:.. Sculptor Galaxy.. Helix Nebula.. , this was only possible thanks to my new observatory.. One unusual image I made is.. full Moon in full color.. - Moon image with the color enhanced such that is visible.. My last image was Pacman Nebula - and it was acquired on October 3.. rd.. 2009.. Since then - no luck.. Sunday 6/28/2009.. Weather is still not as good as it used to be in the past years - maybe it is just a new observatory curse.. ? Nevertheless I was able to do some observing and imaging over last few weeks, but not many.. I have both imaging scopes going now, especially Orion 10 is doing great, with a careful collimation it produces fantastic images.. I have imaged with it 3 targets so far:.. M5.. M8 (Lagoon Nebula).. M17 (Omega or Swan Nebula).. The stars are round throughout the frames and image scale allows for quite tight stars as well.. So far I used Orion 10 with Canon 40D only, I will try Q453-HR soon.. My goal with C14 was to do some higher resolution imaging at f7, but it was very difficult due to some flexure in the system.. Q453-HR allows for 10 minutes exposures at my location, and at this length the flexure became quite evident.. I have installed C14 flop stoppers, tightened down C80ED focuser, but it still wasn't enough.. Turned out Lumicon Giant Easy Guider was the culprit, the lens cell was moving quite a bit, and I wasn't able to tighten it up.. I went back to Celestron f6.. 3 focal reducer and finally 10 minutes exposures were within the reach.. The last image I have done with GEG was.. M16 (Eagle Nebula).. , you can clearly see star elongation on the top of the image due to miscollimation, the next one was.. M20 (Trifid Nebula).. and this one finally looks much better.. Sunday 4/5/2009.. Weather has not been good since the end of March, the only new image I took at the very end of March and it is the.. Needle Galaxy (NGC4565).. , it came out better than M104, despite the problems with guiding and wind.. I have finally found a way to stream a reasonably good video embedded in the web page -.. Comet Lulin animation is now available without downloading.. Sunday 3/22/2009.. I have finished my first H.. α-RGB image on Friday - it is.. Christmas Tree Cluster:.. 2 hours of Hα and two hours of RGB.. So far I think it is one of my best images.. I have also shot my first image with CC-Labs Q8 (Q453-HR) camera - it is.. Sombrero Galaxy.. It is OK for the first image, I will keep the gain lower next time.. It is also my 100th image since I started imaging in Ithaca in the summer of 2005!.. Wednesday 3/18/2009.. As you can read below I had some technical difficulties to overcome before I could attend to regular imaging.. Well, I imaged Comet C/2007 N3 (Lulin ) on March 4th, but it took me some time to process the data.. Here is the.. image tracking the comet.. , while the stars are trailed in the background.. I made also an animation of comet movement (over 2 hours period):.. compressed RealPlayer format (300KB).. original AVI file (.. LARGE: 47MB.. ).. or.. streaming from Vimeo.. Saturday 3/14/2009.. I have done some further experimenting with my H-alpha filter and tried to image Christmas Tree Cluster (NGC2264).. Unfortunately the resulting image has these dreaded reflections as well.. I investigated more and it turned out that the reflections are.. only in green and blue channels, not in the red channel.. ! So instead of just converting to mono I split the frames into the color components, and then used only R part.. Here are the original single frame color components :.. R.. G.. B.. And here is the.. final version.. (30x4min).. The final one revealed that my collimation was a bit off, but certainly it doesn't have anything to do with the reflections.. ! So this solves my reflection problems for now and I am back into imaging.. Sunday 2/15/2009.. I have just tried to image M42 with Hyperstar and Astronomik 13nm H.. α filter.. As you can see on.. M42 image.. there are big reflections around bright stars, they look like a defocused images of those stars, there is an example on the bottom of this.. So it looks to me that there was an out of focus image of these stars formed on the filter which was then captured on the image.. Is it normal for H-alpha and Hyperstar (I hope not!)? Or my filter was fogged/frosted (it was 14 degrees)? I made an image of.. M42 last year.. with no filters and it didn't have such problems.. I shot the Moon at the end of my imaging session through the same setup (Hyperstar/H-alpha/C14) and it doesn't show any reflections, which puzzles me a bit.. Here is the Moon shot.. , at least this one worked.. Tuesday 2/10/2009.. Last Sunday I was finally able to come out and do some imaging! Unfortunately in the short time before the clouds rolled in I was only able to capture some.. high resolution Moon images.. Full Moon is the most difficult time to image the Moon since there are very few shadows making the pictures quite flat.. Saturday 1/23/2009.. Finally I am back to my hobby! After the good beginning of 2008 with lots of new images and observing sessions I had a long break - from May to almost December.. The biggest reason was the fact that we moved to a new house (also in Ithaca), but I also had to spent a lot of time at work.. Well, although I wasn't able to practice amateur astronomy I was very well able to prepare for the new chapter.. The new house is located much farther away from the city on a two acre lot, and for the first time backyard observatory was within the reach.. So the observatory has been built in September, and I also acquired a new imaging scope (Orion 10 Newtonian) as well as a new visual scope (Obsession 18 Classic Dobsonian).. Of course with such a large investment it is to be expected that clouds will cover the sky for a very long time - and indeed that happened.. I was able to us my new observatory exactly 2 times so far, but I am a patient man and I know the spring will come and the weather will improve, while the new observatory and new telescopes will wait.. As for now I have bought most of the stuff I wanted in the coming days and months I will focus on using and enjoying them.. I also hope I will be able to update this website often and write some more about the equipment, and hopefully publish new images.. I have updated several pages on the website, mostly under Equipment , and of course I have added pages about my new observatory.. PS: Along with the other stuff I have also got a new TeleVue Ethos 13mm for use with Obsession - it is a fantastic eyepiece!..

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  • Title: Jarek's Amateur Astronomy Site
    Descriptive info: Resources - Books and Magazines.. Here are some that I found especially useful or interesting.. The list is not complete - I am adding more all the time, so please check here from time to time.. The books and magazines listed below are the ones I own or subscribe to and read myself.. Magazines.. I am reading both general astro magazines:.. Sky and Telescope.. Astronomy.. I have also subscribed to a very good magazine focused on astro-hardware is.. Astronomy Technology Today.. Books.. General and observing guides.. Science popular science.. Sky atlases.. Technical optics.. CCD Astrophotography..

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  • Title: Jarek's Amateur Astronomy Site
    Descriptive info: One of my main goals in setting up this site was to share my pictures.. I got involved in astrophotography for the first time in the Spring of 2005 with my C9.. 25 and Meade DSI and since then produced 164 images of 147 objects (3/26/2012).. It is fun! Now, thanks to my observatory I can observe visually and image at the same time.. I have two telescopes dedicated to imaging, three cameras and lots of other equipment.. Initially this page served as a complete guide to my equipment and imaging, but over time it grew too big, so I had to divide it by topics.. Imaging equipment.. section and its subsections cover details of my imaging equipment and imaging aspects of my telescopes.. General.. accessories.. page describes all non-imaging gear, and.. telescopes.. section hosts in-depth description of the telescopes I own (or owned).. This page links to my astrophotography gallery.. There are two pages that are not galleries here:.. procedures.. describing the way I conduct various aspects of my imaging sessions and.. processing.. dealing with various image processing techniques I use.. The fastest way to get the newest objects is to go to.. All objects.. , they are ordered from the newest to the oldest.. All pictures.. lists the entire collection of images from the  ...   Galaxies.. Images of galaxies (.. Globular Clusters.. Images of globular clusters (tight spherical associations of many thousands of stars;.. ).. Open Clusters.. Images of open (galactic) clusters - associations of young stars, slowly diffusing out (.. Planetary Nebulae.. Images of planetary nebulae - emission nebulae formed by dying low-mass stars (.. Wide field.. Images covering wide swath of the sky, usually with multiple objects.. Narrowband.. Images obtained in small subsection of visible spectrum, usually around H.. α hydrogen emission line, OIII ionized oxygen emission line or SII sulfur emission line.. Messier objects.. Objects from.. Messier catalog.. , a collection of objects created by French astronomer Charles Messier in 1700s.. Ordered by catalog number.. NGC objects.. Images of objects from.. New General Catalog.. (NGC).. Images of all objects, one image per object.. All above sections have All pictures subsections that list all images in this particular category.. Since March 2012 the gallery is served by my data management system.. You can now click toggle filtering on the right above the image list and you will be able to search my images by many various keywords (objects, catalogs, equipment and more).. The system is written in Perl using MySQL database for data storage.. NOTE: It is very important to make sure your.. display (monitor/LCD) is properly calibrated.. !..

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  • Title: Jarek's Amateur Astronomy Site
    Descriptive info: Observatory.. I have decided to build my observatory around the same time when we decided to move to the new house - in the spring 2008.. Once the decision was made (and funding secured.. ) I started to look for the best location.. At first I thought that I should buy or lease a lot in a place with as little as possible light pollution and a good view along the horizon.. Well, at first I explored the map virtually and I selected several places, but when I started to check them out it turned out it is not that easy.. Many places looked good on the map, but were virtually inaccessible, or would be inaccessible in the winter.. Despite these problems I have located a few suitable places (some are marked on my.. light pollution map.. ), but then it proved very difficult to locate owners and convince them to lease or sell.. During that search I also realized that an observatory 30 minutes away from the house won't be used as much as the one next door.. and I turned my attention to my new house.. Fortunately the place turned out to be suitable for an observatory, the house is located close to the top of the hill away from the city, the biggest obstacle being the slope of the hill going up towards the south and thus limiting the view there to around -32.. in declination.. The limiting magnitude (as measured with.. Sky Quality Meter.. ) turned out to be 6.. 1 while the best location within a reasonable driving distance had limiting magnitude of 6.. 43.. Not too bad, especially taking into account half an hour commute on not-so-good back roads.. There are three houses in direct view (including mine), one behind the trees and two in the open.. However, there are no outdoors floodlights in use and generally the light proved to be unobtrusive so far.. The decisions about the building and design were much easier to make.. First, I decided that I won't build it myself, it would take too long and with the free time I had available it would probably last more than a year (or more likely two).. I wanted to have an observatory housing more than one scope and possibly storing another one, so the only choice here was roll-off roof design.. With these constraints in mind I carried out a search for an appropriate company and design.. The one that looked best was.. BackyardObservatories.. com.. , I met them at the NEAF show in the spring 2008 and their  ...   a no issue, usually very little snow accumulated on the roof, and on one instance that it did it was easy to remove it with a roof rack.. There are three doors - one entering the warm room (main entry) from outside, another between warm room and observing room, and the third between observing room and the deck.. I have chosen two Omega-2 piers with a custom top plate suitable for CGE equatorial head.. They also installed electrical wiring throughout the observatory (with white and red lights), after the observatory was finished I have run a buried power cable from the house and connected it via access they left.. Warm room.. Control center in.. the warm room.. Deck, west side.. Observing room.. deck doors.. warm room doors.. Bolt for anchoring the roof.. Anchoring the roof to.. the motor rail.. Ready to roll off.. Motor.. C14 ready.. Newtonian ready.. The Dob on the deck.. View from the north.. View from the south.. The Dob ready to roll in.. Observatory closed.. The roof just sits on the rails and is kept down by its weight.. When closed it needs to be anchored down with three screws, the fourth anchor point is at the motor.. For this size of the observatory I had to order a heavy duty motor - especially that I had to count in some snow in the winter.. So far I am very happy with my observatory, and as of this update (February 14 2010) it is over 18 months since it was built.. There were no major problems at all, only two very minor fixes.. I had to enlarge holes in the floor around pier bolts since in two places the floor was touching the bolt and transmitting some vibrations.. I think the floor settled a bit, and since the original holes were quite tight even small move was enough to connect.. I have also installed a small gutter ( white aluminum mini gutter from Mobile Homes Parts Store) on the south side of the roof to collect condensation dripping there on the very dampest nights in the summer.. Without the gutter the water was dripping on the floor, and then I was afraid it may increase humidity inside the closed observatory during the day.. I have also painted the wood outside with a wood protector.. The Observatory greatly simplified my observing and imaging sessions and I used it extensively in the spring, summer and fall 2009.. It is a joy to have and use and I would order it again from.. the same way as I did..

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  • Title: Ithaca NY Cloud Cover
    Descriptive info: Ithaca, NY Area Cloud Cover.. LAT=42.. 4672 North (42 28' 02") LON=76.. 3438 West (76 20' 38").. Based on NOAA.. Regional Weather Forecast.. U.. Naval Observatory Data Service.. This page is updated automatically at 3:30am 9:30am 3:30pm 9:30pm.. Updated Sun Oct 6 09:36:07 2013.. [update now].. large version with cloud cover only.. This page is maintained by.. Jaroslaw Pillardy.. For comparison, here is Ithaca Clear Sky Clock, it uses different data source.. 8AM.. 11AM.. 2PM.. 5PM.. 8PM.. 11PM.. 2AM.. 5AM.. EDT.. Sun Oct 06.. Cloud Cover.. Sunset: 18:38.. Astronomical twilight: 20:12.. Astronomical twilight: +1day 05:37.. Sunrise: +1day 07:10.. Moonrise: 08:54.. Moonset: 19:33.. Moon ilumination: 6%.. 18.. 21.. 00.. 03.. 06.. Temperature.. Weather..  ...   12%.. Tue Oct 08.. Sunset: 18:35.. Astronomical twilight: 20:08.. Astronomical twilight: +1day 05:39.. Sunrise: +1day 07:12.. Moonrise: 11:08.. Moonset: 21:05.. Moon ilumination: 21%.. Wed Oct 09.. Sunset: 18:33.. Astronomical twilight: 20:07.. Astronomical twilight: +1day 05:40.. Sunrise: +1day 07:13.. Moonrise: 12:11.. Moonset: 22:01.. Moon ilumination: 30%.. Thu Oct 10.. Sunset: 18:32.. Astronomical twilight: 20:05.. Astronomical twilight: +1day 05:41.. Sunrise: +1day 07:15.. Moonrise: 13:08.. Moonset: 23:03.. Moon ilumination: 42%.. Fri Oct 11.. Sunset: 18:30.. Astronomical twilight: 20:03.. Astronomical twilight: +1day 05:42.. Sunrise: +1day 07:16.. Moonrise: 13:59.. Moonset: +1day 00:09.. Moon ilumination: 53%.. Sat Oct 12.. Sunset: 18:28.. Astronomical twilight: 20:02.. Astronomical twilight: +1day 05:43.. Sunrise: +1day 07:17.. Moonrise: 14:43.. Moonset: +1day 01:17.. Moon ilumination: 64%..

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  • Title: Upstate NY Light Pollution Map
    Descriptive info: .. CrunchedLayers.. Jarek's Amateur Astronomy.. This is a Mashup created from light pollution map from.. The World Atlas of the Artificial Night Sky Brightness.. Powered by.. MapCruncher.. Beta for Microsoft.. Virtual Earth.. Light pollution layer is shown up to zoom level 14.. Show Light Pollution Measurements:.. Show Light Pollution Layer:.. Opacity:.. 0.. 35..

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  • Title: Jarek's Amateur Astronomy Site
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  • Title: Jarek's Amateur Astronomy Site
    Descriptive info: Venus Transit.. June 5 2012.. These pictures document the trip of a group of Ithaca amateur astronomers to watch Venus transit on the shore of lake Ontario in Wilson, NY.. Unfortunately Ithaca was clouded out, so based on weather forecast we have chosed Wilson, NY.. The trip was perfect, we were able to watch about 2 1/2 hours of transit.. Most of the pictures I made myself, some were provided by Carl Burr, Moe Arif and Rob West - the authors are noted on the picture page.. Page: 1.. 2..

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  • Title: Jarek's Amateur Astronomy Site - Album
    Descriptive info: Jarek's Amateur Astronomy Site - Album.. Loading image.. [2012-04-03] Narrowband Syntetic Colors with Astronomik Hα 12nm filter and Astronomik OIII 12nm filter,.. Celestron CGE1400.. (Teleskop Service SCT 0.. 8x reducer/corrector, Orion Nautilus Motorized Filter Wheel) with.. SBIG ST-8300M.. (-17C).. 23x300sec Há and 23x300s OIII (total 3 hours 50 minutes).. Guiding through.. Orion SteadyStar Adaptive Optics Off-Axis Guider.. with.. StarlightXpress Lodestar.. Image taken 04/03/2012 and 04/05/2012.. Objects:.. Loading object info.. Toggle image autoresizing.. (currently :.. off.. Adjusting monitors/LCDs/flat panels for viewing pictures..

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  • Title: Jarek's Amateur Astronomy Site - Album
    Descriptive info: [2012-04-06] Narrowband Syntetic Colors with Astronomik Hα 12nm filter and Astronomik OIII 12nm filter,.. 8x reducer/corrector) with.. 30x300sec Hα and 30x300sec OIII (total 5 hours).. Image shot 4/6/2012 and 4/7/2012..

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    Archived pages: 181