NGC 2903 and Dwarf Galaxy KKH 51
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Hello Everyone! Myron nicely touched up the polar alignment on MSRO 2 which has made it possible to do longer stretches of unadjusted imaging so last night I took a crack at NGC 2903 early in the night. In the attached image you'll see a fuzzball off to the side of the barred spiral galaxy NGC 2903...that's dwarf galaxy KKH 51. Thanks! Pete Laky
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March 2025 Meeting and Program
Dear RAC, Enclosed is a zoom invite for our March RAC meeting. Business meeting will start at 7:30 and go until approximately 8-8:15. Following that will be open discussion by members about the recent lunar eclipse. Please join in and share your photos, observations and thoughts on the recent total lunar eclipse. Myron RAC President (Myron Wasiuta) is inviting you to a scheduled Zoom meeting. Topic: RAC March 2025 Meeting and Program Time: Mar 19, 2025 07:30 PM Eastern Time (US and Canada) Join Zoom Meeting https://us02web.zoom.us/j/84934708780?pwd=v2jmLmIm1W66vid8nKx3mrrHYyFFuE.1 Meeting ID: 849 3470 8780 Passcode: 395668 --- One tap mobile +13092053325,,84934708780#,,,,*395668# US +13126266799,,84934708780#,,,,*395668# US (Chicago) --- Dial by your location ? +1 309 205 3325 US ? +1 312 626 6799 US (Chicago) ? +1 646 558 8656 US (New York) ? +1 646 931 3860 US ? +1 301 715 8592 US (Washington DC) ? +1 305 224 1968 US ? +1 346 248 7799 US (Houston) ? +1 360 209 5623 US ? +1 386 347 5053 US ? +1 507 473 4847 US ? +1 564 217 2000 US ? +1 669 444 9171 US ? +1 669 900 9128 US (San Jose) ? +1 689 278 1000 US ? +1 719 359 4580 US ? +1 253 205 0468 US ? +1 253 215 8782 US (Tacoma) Meeting ID: 849 3470 8780 Passcode: 395668 Find your local number: https://us02web.zoom.us/u/kdKTbChf6
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Lunar Eclipse photos
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Good Morning, Here are a few pictures of this morning's lunar eclipse. I was lucky that I got to see it until clouds came in just before the end of the total phase. I used a Canon Rebel T3 at prime focus of a 94mm f/7 Brandon semi-apo refractor. Due to it being about 2:45 AM in the morning and me being a knucklehead-I forgot to tighten the lock screw on the focuser clamp. As a result the weight of the camera slowly pulled the focuser away from the best focus position during my imaging. Consequently most of my images were out of focus. At least I got to see it visually through this nice telescope. The view was amazing! Myron
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Eclipse
Sent from my iPhone I got a few pictures from start until clouds set in. I used an old celestron gt 90 refractor and cannon m50 camera.
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Animated gif of T CrB B band light curves between Feb 14-Mar10
Hi everyone, I have been observing the recurrent nova T CrB over the past few weeks in a more controlled way-capturing hundreds of 40 second exposures using a remotely accessed 10" RC and QHY 294M Pro camera and filter wheel (MSRO Station 2 telescope). Specifically, i have been concentrating on collect B band data as this is more sensitive to activity on and around the white dwarf as it accretes matter from the red giant. This star is about magnitude 10.1 in visual, but about 11.3 in the B (blue) band. When it goes nova it should briefly shine as bright as perhaps some of the stars in the Big Dipper! This was expected to have happened already, but we are still waiting. it may go at any time, or it may be another year. no one knows for sure. I have been performing this high cadence photometry in hopes of recording behavioral changes in the star that might signal an impending eruption. While nothing definite yet has occurred, I have noticed something interesting. The star has been varying between blue magnitudes 11.3 and 11.0 during my observations. The amount of flickering seen in the light curves seems more prominent when the star is brighter (near magnitude 11.1) than when at its fainter levels (mag 11.3). To help illustrate this, my friend Boris Starosta made an animated gif showing my light curves on 11 mornings from February 14 to March 10 2025 aligned so that changes from one observation to the next are easier to appreciate. This gif represents about 32 hours of continuous observing time on this star on 11 mornings. Most observing sessions were between 3-5 hours long. The graphs each have three horizontal light curves-two red and one black. the black curve is that of T CrB. The upper red line is a reference star at B magnitude 10.98. This line remains unchanged as it is a reference magnitude from which the Y-axis (magnitude) is calibrated. The bottom red light can be seen to vary in brightness slightly due to variations in seeing and instrumental effects. It can be thought of as a check against any changes seen in the target stars light curve. If changes in sky conditions cause changes in the stars brightness, these will show up as fluctuations in both the check star at the bottom as well as in the target star (black curve). However, if the bottom red line is relatively flat, but the target stars curve is varying considerably more than those changes in the curve at the bottom-it can be safely assumed the effect is real changes in brightness of the target star ( T CrB) Careful inspection shows the target star undergoes rapid changes in brightness on the order of 0.1 magnitude or greater in a matter of minutes. This is called "flicker" and is most likely due to fluctuations in brightness of the accretion disk or near-surface effects on the white dwarf itself. Flicker is seen in many stars of the dwarf-nova categories as well (SS Cyg is a good example). On this animation, note how the amount of flicker seems to be greater when the star is brighter (closer to the top red line). On some mornings when the star was closer to B magnitude 11.3-the curve was smoother with less variability. I don't know if this is a real effect, and if it is what exactly it means. But it was convincing enough for the most part for me to notice and I just wanted to put out my observations to others who may be interested in this star. Sooner or later its going to go nova, and when it does I hope to be able to look back over my light curves for clues that might be able to predict when the next nova eruption occurs in about 2105. Thanks again to Boris for putting this animation together, and I hope everyone enjoys it!
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Richmond Astronomical Society Meeting on Tuesday
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The Next Meeting of Richmond Astronomical Society is Tuesday, March 11, 7:30 PM at the Science Museum of Virginia (2500 West Broad St.) and online at the link below. Everyone is welcome. RAS board member Bryan Hartley will be presenting on what we can learn about space through color. The title of his presentation will be, "Color Out of Space - Or How We Know That Nebula Tastes Like Raspberries". Please join us for his presentation - it sounds delicious! A number of us will be also gathering for dinner before the meeting at the Chicken Fiesta restaurant across the street from the museum about 6:00 PM. Please join us for the meeting in person or online and for dinner, if you can. Zoom link to Tuesday's meeting Join our Cloud HD Video Meeting Join our Cloud HD Video Meeting Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video an... Dial in (if needed): (301) 715-8592 Meeting ID: 880 1225 7115 Passcode: 464955
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M95 and Quasar
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Dear RAC, MSRO user Marshall Faintich requested time on the MSRO 2 telescope recently to image M 95 in Leo. Enclosed is an "LRGB" image made using the photometric RB and V bands to simulate red, blue and green channels in the color composite. The luminance band was made by exposing with no filter in place. This image is about 3.5 hours of exposure time. Marshall pointed out to me the distant quasar J104335.9+115129 not far from the galaxy. This quasar is over 6.8 billion light years away! This has to be one of the farthest objects images at MSRO. Quasars are the intensely bright nuclei of very distant galaxies and on exposures with large telescopes look like fuzzy bluish stars. Careful inspection shows the bluish color in this image. Myron
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New base
Shout out to Troy for building me this base! Backnin business baby!
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Cruises
MA Stargazing Cruises stellar-events.orgI wonder if they would do group cruises? That looks like it would be a lot of fun.
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M95 with unknown asteroid
Dear RAC, Perhaps someone can help ID the asteroid in the upper left part of the image. This may be 2270 Yazhi (16th mag), but my software places in outside the field of view. I have annotated the image with date and time in case anyone wants to take a stab at ID this object. the trail orientation is exactly what one would expect from a main belt asteroid. Myron
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Astronomical League Live this Friday, March 7 at 7 pm EST
-------- Original Message -------- Subject: Astronomical League Live this Friday, March 7 at 7 pm EST Date: 2025-03-05 14:07 From: <dknabb01@...> To: "Don 01 account" <dknabb01@...> Greetings MERAL Presidents, ALCors, editors, officers, and others, I will attach a graphic announcing the upcoming Astronomical League Live show this Friday, March 7 at 7 pm EST. You can tune in using a link from the AL Facebook page https://www.facebook.com/Astronomical.League or at Explore Scientific at https://www.explorescientific.com/pages/explore-alliance-live . The show features Bob King, also known as Astro Bob. I'll be on for a short presentation on the upcoming night sky highlights. Please share this information with your club members and post the graphic on your website and social media. Clear skies, Don Knabb MERAL Chair
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Something for Myron to try
Here is a link to one of the 2023 Photo Contest winners I ran across going over some old issues of Optics & Photonics News. It was even done with a 10-inch Ritchy-Chretien and a Star Analyzer! https://www.optica-opn.org/home/articles/volume_34/december_2023/features/2023_photo_contest_winners/ Bart
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Staunton River Star Party registration is open
-------- Original Message -------- Subject: Staunton River Star Party registration is open Date: 2025-03-03 20:04 From: <dknabb01@...> To: "Don 01 account" <dknabb01@...> Greetings MERAL Presidents, ALCors, officers, editors, and others, Jim Browder of the Richmond Astronomical Society has asked me to share the information below about the Staunton River Star Party. This is the first regional event in the MERAL region for 2025 and it sounds like a wonderful gathering of amateur astronomers. Clear skies, Don Knabb MERAL Chair From Jim Brower: Registration is now open for the Staunton River Star Party! Staunton River State Park has dark skies, a beautiful setting, along with an extremely helpful and welcoming park staff. Electrical power is available in the observing field and food service (really good food service) is available onsite at the park. Astronomers are welcome to camp on the observing field with their telescope equipment. If you don't like camping, the park is only about 20 minutes from South Boston where you can find hotel lodging. Registration and more information available at this link: https://chaosastro.org/starparty-home/ [1] https://www.facebook.com/share/p/1E73aLuSbN/ [2] Links: ------ [1] https://l.facebook.com/l.php?u=https%3A%2F%2Fchaosastro.org%2Fstarparty-home%2F%3Ffbclid%3DIwZXh0bgNhZW0CMTAAAR26vKNLvK7GycgHQuQYOhe2i2FYTKCAM2GEzj7KfURwzF_-A0Z_DUJ6TEQ_aem_jyCpwOwzEVAhpbQJz8z8oQ&h=AT0pk8E65PfYxnijVzV5xA3WRuqcOYjpGx4ufHFh-aGEvaWJt792RfnnWDEI34f3b-ySHDLj9bChlHuS2xC3KrVysGAs-cfO6nrH9V_FRqqiexBZeXHUI9ws4fq2ezvslEyq2Q [2] https://www.facebook.com/share/p/1E73aLuSbN/
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Star party report
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Hello all, The weather was much worse than forrecast tonight, but we had 17 people at our Rappahannock Astronomy Club star party at Caledon. I talked with one family moving into the area and looking for a local astronomy club. Most were looking for the planetary alignment. The western horizon was cloudy at sunset. We did not see Saturn before it set, and caught only a single glimpse of Mercury through the clouds. The 2 day old Moon was beautiful, and frequently going in and out of the clouds with Venus. We later had some times with Jupiter and Mars in the clear. Because of the high wind I brought binoculars rather than telescope. We looked at constellations and asterisms. By 7:30 most people were cold and departing. This might be the earliest I've ever been finished with a star party. At about 7:45 we suddenly saw a straight line of about 20 satellites, about magnitude 1, vertical at about 310 degrees azimuth, from the horizon to about 40 degrees altitude. The display only lasted about 2 minutes and then they went dark. That normally is from a launch releasing a cluster of Starlinks together, but I don't find a report of a launch today. Would the line of Starlinks launched on the 26th still be that organized and turn bright and then dark again so crisply? Of course, after I was all packed up, the entire western sky turned clear. I had planned to look for Uranus as a binocular target, but my fingers were cold enough that I didn't unpack the binoculars again. By the time I reached home the west was cloudy again. Thanks to Caledon. Hope everybody saw something pretty. -- Glenn Holliday holliday@...
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NGC 2276
Hi Everyone! Spent some time last night re-imaging NGC 2276 using MSRO 2 (thanks Myron!) under somewhat more favorable conditions than my last attempt. The main issue last night was strong wind gusts. I think I see ten galaxies in this stacked image, eight of them quite clearly. I find NGC2276 to be an absolutely fascinating target with its asymmetry. Thanks! Pete Laky
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Star party ON tonight at Caledon
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Good morning everybody! All the forecasts call for a clear evening to see the planetary alignment with a crescent Moon. The temperature will decrease from the 40s to freezing, so please dress to stay warm. Wind gusts will increase to 40mph, so telescopes might become less usable as the wind increases. Directions to Caledon State Park are at https://raclub.org/star-parties/locations/. Sunset will be 6:00pm. I expect to see folks there to set up while there is still light by 5:30pm. Full dark approximately 7:00pm. The event is on Caledon¡¯s calendar at https://www.dcr.virginia.gov/state-parks/event?id=2025-02-02-15-12-48-219423-m17 Note that the park says the usual parking fee does apply. See you there. -- Glenn Holliday holliday@...
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T CrB update
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Good Morning, I have started following T CrB in B band as this is more sensitive to changes in activity on and around the white dewarf. The star continues to flicker between magnitudes 11.1 and 11.3 in the B band. The spectra also is unchanged from my baseline. There was interference from high clouds during the 4 hour observation. Myron
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ATM time
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RAC, It seems that I am headed down the Amature telescope making path. Has anyone in the group gotten their hands dirty with this? I¡¯ve been reading lots of forums and blogs of other peoples projects with reflectors & refractors. My craftsman skills are mostly wood working related with some tangential metal working but I¡¯m intrigued by the Schupmann design of scope. I think it makes sense to start with a small refractor though. I¡¯m wondering if anyone has any experience in this area and has any advice or sage wisdom as far as things to avoid, common pitfalls, design considerations. Ideally i¡¯d like to build scopes that can be for visual and photography which is why the Schupmann design is incredibly intriguing. I feel I should start with already purchased lenses for a short refractor and work my way into grinding my own for a Schupmann down the road. SC¡¯s and RC¡¯s are also tantalizing to attempt as well. I¡¯ve been getting lost in YouTube rabbit holes on lens and mirror grinding and building testing equipment. Hope all are well and praying for some clear skies! BWB -- WO GT81 20th anniversary edition SVB 50mm guide Mount, ES EXOS2 PMC8 ASI 533MC Pro/ASI 533MM Pro ASI 120 MM Mini ZWO EFW7 1.25¡± Pegasus Focus Cube Stellarmate Pro 64gb, Kstars & Ekos Astro Pixel Processor, StarNet++, Affinity Photo
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[CvilleAstro] MP4 version of Crab Nebula animation
Marshall, Changes in the appearance of the Crab Nebula are well known and not a new finding. There are some really cool Hubble Space Telescope animations showing ripples and waves propagating away from the pulsar region. The animation presented here was just for curiosity sake- I wondered if two images taken 9 years apart would show changes. As you point out there was alot of uncontrolled variables as these images were not captured specifically for this project. Nonetheless I do think that at least some of differences showing up are real ( I do think there is a suggestion of expansion at least). In addition the proper motion of the pair of stars in the lower left was a neat bonus as well! Thanks for the tip on using PIPP to create animations. I¡¯ll definitely look into that. Myron
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MP4 version of Crab Nebula animation
Dear RAC, CAS, and friends, A number of people had trouble viewing the animation I sent out showing changes in the Crab Nebula over 9 years. Heres another version saved as MP4 format. hopefully this will work better. I have a friend working on this video also and im sure his final version will be very nice. Ill send that out when its ready. Note the high proper motion stars in the lower left of the image as they jump back and forth. One image was obtained in 2016 and the other just a few weeks ago. Two different telescopes (Meade 12" LX-200 for 2016 image and a 10" R-C for 2025 image) and two different cameras ( ATIK 314E CCD for 2016 and QHY 294M Pro for 2025 image). Not the best way to do it but 9 years is a long time! I have thousands of MSRO images archived going back to 2015 as we save all the data. It might be interesting to create other animations using the old images- who knows what might show up! Myron Wasiuta- Mark Slade Remote Observatory
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