jonbosley

Absolutely brilliant David! Congratulations! To have all the observations cataloged is a great resource, it the sort of thing I could spend hours pouring over. I to use to belong to the Junior Astronomical Society many moons ago, a great intro for astronomy. I know the skies in the UK are a challenge even at the best of times so to nail a thousand galaxies is a great achievement. I now live in Texas so lots of clear nights. I probably get more clear nights in a good month then most people will get in 12 in some parts of the UK so I can really appreciate the work you put in. Jon

Here is some update reporting on the Domes from LROC https://www.lroc.asu.edu/posts/1133 Jon

4” Refractor UTC 8/28/2023. Time covered a number of hours with other observations covering approximately 03.00-0500 UTC. 87% illumination, Alt covering 29°-31°, Location Central Texas (unfortunately I cannot give exact location on a public forum). Here is an image that I took with my 18” on a Lunation day 10, so very similar outlay except the shadows where shorter and not as much detail obviously. I have not been able to have a clear observation of the summit crater on Gamma using my 4” as of yet, probably as I use other telescopes when the seeing is very good. Image details. UTC 05/12/2022 10 day Moon. Very good seeing 1.6 arcsec but gusting winds. 18” reflector, f16.5, 3x barlow, Player One Mini 429 camera, red 610nm filter. Central Texas. Jon

Here is a recent observation report I made in average seeing. Mons Gruithuisen Domes Lunation Day 11 Observation 4” f11 Refractor 204x Mons Gamma the dome on the west side is casting a shadow to the southwest. The north eastern part of the dome is in sunlight with the summit also brightly illuminated. No summit crater was visible. Mons Delta is casting a more prominent shadow to its southwest towards mons Gamma with the summit a slightly darker albedo than mons Gamma. The isolated raised highland is well seen to the south of Mons Delta, this is casting in westerly shadow over the newly named Sinus Viscositatis. The crater Gruithuisen P located just east of mons Delta is well seen with much of its floor in shadow. The third dome NW is much smaller but could be clearly observed just to the west side of Mons gamma. Mons NW has a bright illuminated summit and like its larger neighbor casting a small shadow towards the southwest.

Sorry, forgot this was not linked to my flicker which had all information. Very good seeing 1.4 arcsec. 18” Reflector 3x Barlow f16. Player Apollo-Mini 429 camera 17 Day Moon

With 1.4 arcsec seeing (according to my app) I managed to get one of the best images of Posidonius Crater on a 17 day moon. Notice the rilles on the floor of 28km Daniell to the left. It is remarkable the difference in seeing makes. Other images I have taken in good seeing ranging from 1.6 to 1.8 of Posidonius do not show the resolution details that this image does.

I have it here, taken on 11 day moon. I was actually imaging Mairan Dome T nearby. This is with my 18” Dob, Texas skies.