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HANTO
professor emeritus
Reged: 08/24/07
Posts: 606
Loc: Unterallgäu, Bavaria, Germany
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Hi all,
just a supplement from last month due to missing new images.
Large version: http://www.aau.telebus.de/Ver_7/user/Torsten_Hansen/Mond20090909/Mond20090909TheophilusCyrillusCatharinaw.jpg
Medium version: http://www.aau.telebus.de/Ver_7/user/Torsten_Hansen/Mond20090909/Mond20090909TheophilusCyrillusCatharinawm.jpg
Best regards
Torsten
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Mert
Carpal Tunnel
Reged: 08/31/05
Posts: 1792
Loc: Spain, Pamplona
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Hello Torsten,
These are magnificent images, did you use an IR
pass filter? ( 610nm it says in the bottom of
the image )?
Where did you buy these filters if I may ask?
Very sharp, well done!
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Mert
42º49"N 1º38"W
3" Polarex refractor
6" F12 SW Maksutov,CS2-S
EQ6 + EQMOD 
SPC900NC/DFK21AU04.AS
My web-page don't laugh, I should make it better! 
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Savio Fong
Vendor (Galaxy Scientific)
Reged: 10/05/09
Posts: 26
Loc: Hong Kong
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Hello Torsten, stunning and thanks for posting. Would you share a little more the imaging data, like exposure time, numnber of frames stacked, gain setting, telescope focal length and effective focal length... etc? thanks a lot.
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My Blog - Star Fantasy
Fixed domes : Lake Egret Observatory, Star Academy
Mobile Equipment : APM 203 f7 APO refractor, Paramount ME, PWT Tripod
Eyepieces : only TMB Supermonocentrics and Televue Ethos
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HANTO
professor emeritus
Reged: 08/24/07
Posts: 606
Loc: Unterallgäu, Bavaria, Germany
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Thank you, Mert!
Quote:
..., did you use an IR pass filter? ( 610nm it says in the bottom of the image )?
Where did you buy these filters if I may ask?
...
It´s a Baader RG 610nm longpass filter. Well, I think the RG means "Rot Glas" in german, which simply is translated as "Red Glass" in english. These short forms (RG, OG, BG, VG etc.) are used by the german Schott glass company.
A link to the filter curve: http://www.baader-planetarium.de/sektion/s40/bilder/transmission_rot_gross.jpg
Best regards
Torsten
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HANTO
professor emeritus
Reged: 08/24/07
Posts: 606
Loc: Unterallgäu, Bavaria, Germany
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Thank you very much, Savio!
Quote:
... Would you share a little more the imaging data, like exposure time, numnber of frames stacked, gain setting, telescope focal length and effective focal length... etc? thanks a lot.
Hope you don´t mind the concise diction list.
Telescope fl: 1200mm, f/6
Effective fl: 5800mm, f/29
Exposure time: 1/30s - 1/60s (estimates, cause I don´t remember exactly)
Gain: 980 - 1010 (estimates, cause these are my general gain settings)
Number of stacked frames: 200 - 300, using avistack
Best regards
Torsten
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wes
Pooh-Bah
Reged: 11/13/03
Posts: 1019
Loc: Oklahoma
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Hi Torsten,
Excellent! image, I like the extra contrast that imaging near the terminator gives.
Thanks,
Wes Higgins
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RobertED
professor emeritus
Reged: 07/11/03
Posts: 1192
Loc: Johnston, RI
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Beautiful work!!, Torsten!! 
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Mert
Carpal Tunnel
Reged: 08/31/05
Posts: 1792
Loc: Spain, Pamplona
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Thanks a lot Torsten for the info,
hope I can get something to improve like you
have done soo well!!
Great images, again thanks for sharing!
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Mert
42º49"N 1º38"W
3" Polarex refractor
6" F12 SW Maksutov,CS2-S
EQ6 + EQMOD
SPC900NC/DFK21AU04.AS
My web-page don't laugh, I should make it better!
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