One Night In The Gassendi Crater, on the 23rd April, 2021

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j.gardavsky Germany
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One Night In The Gassendi Crater, on the 23rd April, 2021

#1

Post by j.gardavsky »


Hello all,

the bright Moon and the fairly good skies have been a good reason to spend an observing session with the Moon.
After watching the terminator,
Moon 1.jpg
Moon 3.jpg

I have been spending most of the time in the Gassendi, and in the area around,
Moon 2.jpg
It has been fascinating to see numerous rimae in Gassendi, and the Rupes Liebig in Mare Humorum, and other rimae on the rim of Mare Humorum.

The annotated panel is here,
Moon annotated.jpg


Date and time: 23rd April, 2013, 21:00 – 23:00
Telescope: 6” F/5 achro, 60mm zenith prism
Eyepieces: DOCTER UWA 12.5mm, Tak MC Or-5 (TS in triangle), Pentax SMC O-5, Pentax SMC XO 2.5
Filters: No filters
Camera: Panasonic DMC-GF7, Leica DG Macro Elmarit 2.8/45 Asph., setting: ISO 320, speed 3.5, hand held behind the DOCTER UWA eyepiece

Thank you for looking and reading,
JG
6" F/5 Sky-Watcher achro, 2" BBHS Star Diagonal, 2" zenith prism, 1.25" Takahashi prism
Leica 82mm APO Televid
Eyepieces: Docter UWA; Leica B WW and WW Asph. Zoom; Leica HC Plan S and L, monocentric; Pentax SMC XW, O-, XO; Tak MC O, Carl Zeiss B WW, and Pl, E-Pl, S-Pl, W-Pl;
Swarovski SW; Baader Symmetric Diascope Edition; Nikon NAV SW, ; TMB supermonocentric; Rodenstock; Vixen HR; TV Delos
Filters: Astrodon, Astronomik, Baader, Balzers, Zeiss West and East, Lumicon
Binoculars (7x42 up to 15x85): Docter Nobilem, Leica Ultravid, Nikon Astroluxe, Swarovski EL Swarovision; BA8 (Kunming Optical)
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Re: One Night In The Gassendi Crater, on the 23rd April, 2021

#2

Post by turboscrew »


Nice pics, JG!
- Juha

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Re: One Night In The Gassendi Crater, on the 23rd April, 2021

#3

Post by Lady Fraktor »


A great place to spend time on the lunar surface, glad you managed time to enjoy it.
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Re: One Night In The Gassendi Crater, on the 23rd April, 2021

#4

Post by notFritzArgelander »


Very nice. The Gassendi Crater and surrounds are one of my favorite areas on the Moon.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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Re: One Night In The Gassendi Crater, on the 23rd April, 2021

#5

Post by Bigzmey »


Nice shots and reports JG! I was admiring it the other night to during my binoviewer session.
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
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Re: One Night In The Gassendi Crater, on the 23rd April, 2021

#6

Post by NGC 1365 »


Thanks for sharing your observations JG, I've also spent a couple evenings this week on lunar as well.
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Re: One Night In The Gassendi Crater, on the 23rd April, 2021

#7

Post by Ylem »


Very nice 👍
Clear Skies,
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Re: One Night In The Gassendi Crater, on the 23rd April, 2021

#8

Post by DeanD »


Thanks JG! Great images for hand-held. :)

It looks like there is not too much wrong with the optics of the 150 f5 Achro, or the Docter eyepiece! Although I am not sure what you mean by "speed 3.5"?

Keep up the good work.

All the best,

Dean
Telescopes: 12" f5 dob, Celestron CPC800, 150mmf5 Celestron achro, Tak TSA102, TV76, ETX125...
Binos: Steiner Wildlife XP 10x26, Swarovski 8x30 Habicht, Zeiss SFL 8x40, Vanguard Endeavour 10.5x45, Fuji FMTR-SX 10x50, Tak 22x60, Orion Resolux 15x70
Eyepieces: way too many (is that possible?), but I do like my TV 32mm plossl, 13mm Nagler T6, 27mm Panoptic and 3-6mm Nagler zoom, plus Fujiyama 18mm and 25mm orthos and Tak 7.5mm LE
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Re: One Night In The Gassendi Crater, on the 23rd April, 2021

#9

Post by j.gardavsky »


DeanD wrote: Sun Apr 25, 2021 12:36 am Thanks JG! Great images for hand-held. :)

It looks like there is not too much wrong with the optics of the 150 f5 Achro, or the Docter eyepiece! Although I am not sure what you mean by "speed 3.5"?

Keep up the good work.

All the best,

Dean
Thank you Dean, and thanks to all, for the kind words!

The 3.5 has been the speed of the lens adjustment (f-stop) on the camera behind the eyepiece, when afocal imaging.
Optimally, the camera lens speed (f-stop) should be adjusted much slower, but with the camera hand held, the resulting exposure time would be too long for the camera O.I.S.

Back to the documentary pics.
Next to Aristarchus there is a rectangular Dog Poo (Hundescheisse) with two small craterlets, which have been nicely resolved through the eyepiece. The Cobra has been still in the shadow.

Clear skies,
JG
6" F/5 Sky-Watcher achro, 2" BBHS Star Diagonal, 2" zenith prism, 1.25" Takahashi prism
Leica 82mm APO Televid
Eyepieces: Docter UWA; Leica B WW and WW Asph. Zoom; Leica HC Plan S and L, monocentric; Pentax SMC XW, O-, XO; Tak MC O, Carl Zeiss B WW, and Pl, E-Pl, S-Pl, W-Pl;
Swarovski SW; Baader Symmetric Diascope Edition; Nikon NAV SW, ; TMB supermonocentric; Rodenstock; Vixen HR; TV Delos
Filters: Astrodon, Astronomik, Baader, Balzers, Zeiss West and East, Lumicon
Binoculars (7x42 up to 15x85): Docter Nobilem, Leica Ultravid, Nikon Astroluxe, Swarovski EL Swarovision; BA8 (Kunming Optical)
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Re: One Night In The Gassendi Crater, on the 23rd April, 2021

#10

Post by Thefatkitty »


Nice session JG; I'm envious! Your pictures and descriptions are excellent as well.

Nicely done; hope your skies continue to be clear!

All the best,
Mark

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Re: One Night In The Gassendi Crater, on the 23rd April, 2021

#11

Post by DeanD »


j.gardavsky wrote: Sun Apr 25, 2021 1:00 pm
DeanD wrote: Sun Apr 25, 2021 12:36 am Thanks JG! Great images for hand-held. :)

It looks like there is not too much wrong with the optics of the 150 f5 Achro, or the Docter eyepiece! Although I am not sure what you mean by "speed 3.5"?

Keep up the good work.

All the best,

Dean
Thank you Dean, and thanks to all, for the kind words!

The 3.5 has been the speed of the lens adjustment (f-stop) on the camera behind the eyepiece, when afocal imaging.
Optimally, the camera lens speed (f-stop) should be adjusted much slower, but with the camera hand held, the resulting exposure time would be too long for the camera O.I.S.

Back to the documentary pics.
Next to Aristarchus there is a rectangular Dog Poo (Hundescheisse) with two small craterlets, which have been nicely resolved through the eyepiece. The Cobra has been still in the shadow.

Clear skies,
JG
"Hundescheisse" - I love it! German can be very descriptive- this is exactly the word you need when you are cleaning up the mess while trying to hold your nose! ;) I said something very similar this morning after one of our cats chucked on our nice clean quilt cover...
Telescopes: 12" f5 dob, Celestron CPC800, 150mmf5 Celestron achro, Tak TSA102, TV76, ETX125...
Binos: Steiner Wildlife XP 10x26, Swarovski 8x30 Habicht, Zeiss SFL 8x40, Vanguard Endeavour 10.5x45, Fuji FMTR-SX 10x50, Tak 22x60, Orion Resolux 15x70
Eyepieces: way too many (is that possible?), but I do like my TV 32mm plossl, 13mm Nagler T6, 27mm Panoptic and 3-6mm Nagler zoom, plus Fujiyama 18mm and 25mm orthos and Tak 7.5mm LE
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Re: One Night In The Gassendi Crater, on the 23rd April, 2021

#12

Post by j.gardavsky »


Hello all,

it is all about the seeing and long cooldown of the telescope and of the eyepieces.

On the side of optics, some eyepieces are doing better on the 6" F/5 achro, and lots of the others have been simply the wrong choice, even if highly regarded by the reviewers on some other forums.

The revelation has been about the forgotten old Takahashi 5mm Abbe ortho (TS in triangle). I've got mine from Intercon Spacetec, and they have still the 7mm,
ex demo: https://www.intercon-spacetec.de/aktion ... 4-5mm.html
new: https://www.intercon-spacetec.de/aktion ... 4-5mm.html

The old Tak 5mm Abbe has a very good match to my 6" F/5 achro, and maybe the 7mm is good as well.

Clear skies,
JG
6" F/5 Sky-Watcher achro, 2" BBHS Star Diagonal, 2" zenith prism, 1.25" Takahashi prism
Leica 82mm APO Televid
Eyepieces: Docter UWA; Leica B WW and WW Asph. Zoom; Leica HC Plan S and L, monocentric; Pentax SMC XW, O-, XO; Tak MC O, Carl Zeiss B WW, and Pl, E-Pl, S-Pl, W-Pl;
Swarovski SW; Baader Symmetric Diascope Edition; Nikon NAV SW, ; TMB supermonocentric; Rodenstock; Vixen HR; TV Delos
Filters: Astrodon, Astronomik, Baader, Balzers, Zeiss West and East, Lumicon
Binoculars (7x42 up to 15x85): Docter Nobilem, Leica Ultravid, Nikon Astroluxe, Swarovski EL Swarovision; BA8 (Kunming Optical)
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Re: One Night In The Gassendi Crater, on the 23rd April, 2021

#13

Post by Makuser »


Hello JG. I am glad that you got this night to enjoy the wonders of the lunar beauty. And, I enjoyed your report and images, including the nice annotated version. Thanks for sharing this work with us on hereJG, and I hope that you have another opportunity to delve back into to the great surface details of our moon again soon.
Marshall
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