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Dear AstroBinners, I was wondering how close can one get to the surface of the moon. I assume seeing is the big limiting factor here. Here is an image from LRO, the Tenerife mountains under Plato;  Is there anything even remotely similar to this scale at a good resolution here on Astrobin? Feel free to share your examples. |
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You can use the search bar at the top of the forum for this. There isn't a method to search by the most "up close". Do a search and include words like "long focal length", "close up", or something similar. You can also attempt to use the Astrobin image filter "field radius", but it really doesn't work once you get down to the level of magnification you're looking for. |
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Yeah unfortunately field radius won't work for lunar images. It's only based on plate-solving, so it only works for deep sky images. You could try filtering by focal length of the telescope used, tho.
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I'm not usually a fan of Luna photography but holy smoly https://stargazerslounge.com/topic/424161-sgl-2024-challenge-4-walking-on-the-moon/ |
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Here is my image of Plato that includes the Tenerife mountains: https://www.astrobin.com/full/gsdrko/0/?nc=collection&nce=30770&mod=&real= |
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I was planning to get a large aperture scope in the past, if that could happen then i would be able to have good enough close ups of the moon, maybe less than most observatories but better than many astrophotographers, i was planning for 20" or up to 24", many are using 10" up to 14"/16" with amazing incredible results, so for me with 20" in my clear sky great seeing conditions i can have wonders of the lunar surface, but i am still suffering to save to fund afford one, and i am thinking about something to make it true hopefully then i can share.
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This is the best I can do with my 80mm 480FL with a 2.5 Powermate attached and ASI224MC.. Not exactly close, but much closer than what I normally could do! Slowly taking the stepping stones to longer and bigger scopes.... https://www.astrobin.com/qvevkz/ Correct me if I'm wrong, but I believe that is Mons Piton shining through the terminator line on the left |
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Chase Newtson: i might have to dig out my barlow lens i've never used before  |
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I've done some of this sort of thing in the past and the formula for success is a large aperture and the seeing to support it. In truth, a 10" aperture can get close to those examples if the seeing is superb and the optics are excellent. This is where you really separate the ok mirrors from the best as it really makes a difference. In most locations, with good technique, something between 10" and 14" would be the most productive. The same goes for planetary photography as well. It's a technical exercise that I still enjoy from time to time to just see haw far I can push things.
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Tom's planetary/ISS images hold the throne imo. Here his Moon pics. https://www.astrobin.com/e8lewj/ https://www.astrobin.com/xgphfh/ |
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I would agree, those are some of the best ground based lunar images I've ever seen and perfectly processed.
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Not on AB afaik but this is really one to contend with LRO: qemr3ckvwfz_original.bmp (2530×1626) (chilescope.com) |
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I think this one is definitely one of the best https://www.astrobin.com/jpyacn/ I did some calculations, and based on what I see in this image, I bet if there was an average or larger sized house, you would be able to see it as a tiny dark spot I know because the total height of Moretus peak is 2.1km and there are some crater walls in the image that look about 1/8 the size of the Moretus peak that would mean the smallest details being resolved are about 250-300 square meters big (if you don't know which one it is, Moretus is the most eye catching crater in the image, the one with the largest mountain in the center of it) |
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Hi, Definitely not most close up, but here's a 6 frame mosaic of an 79,6% waxing Moon I made with an 8" f/12 refractor: https://astrob.in/full/tur7xq/0/?real= Best regards, Arne |
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Arne Danielsen: I would love to know more about your 8" refractor... |
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Arne Danielsen: It's an iStar Asteria TCR 204 f/12 refractor that I bought second hand about a year ago. The main usage of the scope is for solar imaging.  |
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Really neat, unwieldly but wonderful!
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This is a very tricky question considering it's not just the equipment that counts! First of all, it's the Moon itself: the Moon has an elliptical orbit with a substantial eccentricity, so it has a perigee and an apogee, with distances from Earth of about 363,300 km (226,000 miles) and 405,500 km (251,000 miles) respectively. This might not sound much, but in practice it does make a huge difference: https://www.asztrofoto.hu/galeria_image/1661338795 For the record I have experienced this firsthanded: https://www.asztrofoto.hu/galeria_image/1685136555 The 127 MAK should reach a lot higher resolution (in details I mean), even at mediocore seeing. However, I took that image at almost apogee. Also, note that that Moon's and Earth's surfaces is well... round.  "An observer at the equator observing the Moon at zenith is 1.8% closer to the Moon's limb than an observer 90° east or west in longitude, watching the Moon set or rise at the same moment." More to read on the topic here: https://www.fourmilab.ch/earthview/moon_ap_per.html However, this above is only 6000km, it can be compensated with a larger aperture. Following this, I'd also choose the search for craters imaged not on the limb, but actually near the prime meridian of the selenographic coordinate system at perigee, taken from Earth at exceptional seeing from somewhere a mountaintop with telescope that has large aperture and long focal lenght. Also, in blue channel. Bu wait, there is more! I haven't even considered lunar libration yet...!  |
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If you're looking for really nice detailed moon surface pictures, you should check those galleries (some have up to 10m focal length systems, using Barlows) : - https://www.astrobin.com/users/CATHALA.Luc.CATLUC/ - https://www.astrobin.com/users/jp-brahic/ - https://www.astrobin.com/users/Tino2329/ - https://www.astrobin.com/users/MaxWarrior/ - https://www.astrobin.com/users/wouterdhoye/ J.P Brahic mainly takes pictures of the sun, but he has fantastic close-ups of the moon as well. |
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I just posted a picture of the Apollo 15 landing site at Hadley Ridge that I took back in June with a 14¨Dob and 3 X barlow https://astrob.in/7e8tk5/0/ I´ve also compared it to the photo taken from the Lunar Oribitor. To get an idea of scale , compare it my image taken without Barlow of the Sea of Serenity that includes both the Apollo 15 and Apollo 17 landing sites. https://astrob.in/1ex6h8/0/t Another fun one is my Moonscape shot of the Southern limb - https://astrob.in/j7cmd6/0/ Mike |
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Hello, for this purpose, you should look at all moon pictures taken with at least 14" and more. JP Brahic, Tom Williams, Luc Cathala and others already mentionned in the post are excellent lunar astrophotographers for sure ! I may add also : https://www.astrobin.com/users/Andreachievo/ Here is a try with my 18" with red filter : https://www.astrobin.com/full/qf2xbb/0/?mod=&real=  The day I can use the green filer on this area instead of the red one, and I will increase the resolution more than 10%. I've been lucky enough recently to have a seeing that allowed me using a green filter with a 18" Dobson... fort the first time!! This configuration matches the resolution of a 21" aperture with red filter or a 24" aperture with IR pro planet 642-842nm! Here are the results of 18" with green filter (smaller details are approx. 450m): CYRILLUS, THEOPHILUS : https://www.astrobin.com/full/d6vl6i/0/?mod=&real= EUDOXUS, ARISTOTELES and BURG : https://www.astrobin.com/full/lnvtz9/0/?mod=&real= Best regards! |
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Alpine Valley  |
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Luka Poropat: Wow! |
