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LT
週日 05 4月, 2020 21:37
版面: 自製天文儀器 diy Astro Equipment
主題: LT的 DIY 及 modified 天文器材配件相片集 -- Mirror cell for 10 inch Cassegrain
回覆: 11
觀看: 724

Re: LT的 DIY 及 modified 天文器材配件相片集 -- Mirror cell for 10 inch Cassegrain

5. Mirror cell for 10 inch Cassegrain

Rebuilding an OTA for my old 10" Cassegrain made by Parks, USA, for visual observation with bino viewer so that the weight can be reduced by quite a lot for mobile use.
Mirror cell.jpg
Mirror cell.jpg (374.74 KiB) 已瀏覽 44 次
LT
週六 04 4月, 2020 09:56
版面: 天文話題 Everything about Astronomy
主題: Atlux mount
回覆: 1
觀看: 86

Atlux mount

What a beauty to my eyes of this old stuff. So elegant and traditional she is.

Hope it can get reborn with high speed goto function this year.
Atlux.jpg
Atlux.jpg (915.26 KiB) 已瀏覽 86 次
LT
週五 03 4月, 2020 21:59
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Horse head from PTC with ED80Sf
回覆: 107
觀看: 16624

Re: DSO 遺照集 -- Horse head from PTC with ED80Sf

49. Horse head

Taken with Vixen ED80Sf + reducer + LPS + 40Da @PTC in 2014 @510mm F6.4
24x240s @iso1600, autoguided with Vixen GP2 photoguider in RA direction only
HH_20141031_ED80Sf_40Da_iso1600_24x240s_PTC_PS.jpg
HH_20141031_ED80Sf_40Da_iso1600_24x240s_PTC_PS.jpg (1.08 MiB) 已瀏覽 58 次
LT
週四 02 4月, 2020 22:24
版面: 自製天文儀器 diy Astro Equipment
主題: LT的 DIY 及 modified 天文器材配件相片集 -- Mirror cell for 10 inch Cassegrain
回覆: 11
觀看: 724

30cm F4 牛牛

4. 30cm F4 牛牛

若Vixen AXJ mount能背得起這只牛牛,那麼這只牛牛今年就可再投入服務。
300F4_OTA.jpg
300F4_OTA.jpg (785.4 KiB) 已瀏覽 169 次
LT
週三 01 4月, 2020 23:39
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Horse head from PTC with ED80Sf
回覆: 107
觀看: 16624

Re: DSO 遺照集 -- M8 from PTC with DED108SS

48. M8 Taken with Vixen film astrograph DED108SS + LPS + 40Da @PTC in 2011 @540mm F5 18x210s @iso800, autoguided with SXD mount Calibrated with darks only in DSS A little bit out of focus, autoguiding not so good........ Moreover, this old astrograph worked quite good to films, expecially for 67 for...
LT
週三 01 4月, 2020 19:54
版面: 自製天文儀器 diy Astro Equipment
主題: LT的 DIY 及 modified 天文器材配件相片集 -- Mirror cell for 10 inch Cassegrain
回覆: 11
觀看: 724

蜘蛛架 支架擰頭

3. 30cm F4牛牛 蜘蛛架 支架擰頭

為了要盡量減低30cm F4牛牛副鏡系統因應鏡筒指向不同角度所產生的移位,一年多前已做了一個重型蜘蛛架承托架。數日前再用殘餘物料(因缺乏材料)製作了這些擰頭將蜘蛛架安裝入托架內。
spider_knob.jpg
spider_knob.jpg (248.5 KiB) 已瀏覽 220 次
spider_cage.jpg
spider_cage.jpg (281.32 KiB) 已瀏覽 220 次
LT
週二 31 3月, 2020 22:26
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Horse head from PTC with ED80Sf
回覆: 107
觀看: 16624

Re: DSO 遺照集 -- M20 taken with VC and 5Da

47. M20 That should be my best image from PTC ever taken with DSLRs up to now. Taken with Vixen VC200L + reducer + LPS + 5Da @PTC in 2015 @1280mm F6.4 14x240s @iso800, autoguided with Vixen SX2 mount Calibrated with darks only in DSS This DSO had posted on this forum before. But this time it was re-...
LT
週一 30 3月, 2020 23:16
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Horse head from PTC with ED80Sf
回覆: 107
觀看: 16624

Re: DSO 遺照集 -- M17 taken with VC and 5Da

46. M17

Taken with VC200L + reducer + LPS + 5Da @PTC in 2015 in 2 nights @1280mm F6.4
4x240s @iso800 + 8x360s @iso500, autoguided with Vixen SX2 mount
Calibrated with darks only in DSS

Maybe that is the best image from PTC taken with DSLRs by me up to now.
M17_2015_VC200L_5Da_stack_PTC.jpg
M17_2015_VC200L_5Da_stack_PTC.jpg (1.03 MiB) 已瀏覽 361 次
LT
週一 30 3月, 2020 23:09
版面: 天文攝影 Astrophotography
主題: 苦海愛恨
回覆: 7
觀看: 224

Re: 苦海愛恨

[冷汗直流] [冷汗直流] [冷汗直流]
LT
週日 29 3月, 2020 09:58
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Horse head from PTC with ED80Sf
回覆: 107
觀看: 16624

Re: DSO 遺照集 -- M27 with VC and 100Da

45. M27 with VC

Taken with Vixen VC200L + reducer + LPS + 100Da in PTC in 2015 @1280mm F6.4
9x240s @iso800, autoguided with Vixen SX2 mount
Calibrated with bias only in DSS
M27_20150615_VC200L_100Da_iso800_9x240s_PTC.jpg
M27_20150615_VC200L_100Da_iso800_9x240s_PTC.jpg (1009.22 KiB) 已瀏覽 728 次
LT
週四 26 3月, 2020 23:52
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Horse head from PTC with ED80Sf
回覆: 107
觀看: 16624

Re: DSO 遺照集 -- M13

44. M13

Taken with VC200L + reducer + 100Da @PTC in 2015 @1280mm F6.4
3x120s @iso800, autoguided with Vixen SX2 mount
Calibrated with bias only in DSS
M13_20150607_VC200L_100Da_iso800_3x120s_PTC.jpg
M13_20150607_VC200L_100Da_iso800_3x120s_PTC.jpg (1.17 MiB) 已瀏覽 776 次
LT
週三 25 3月, 2020 23:11
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Horse head from PTC with ED80Sf
回覆: 107
觀看: 16624

Re: DSO 遺照集 -- M46 from PTC

43. M46

Taken with VC200L + reducer + LPS + 100Da @PTC in 2013 @1280mm F6.4
6x240s @iso1600, autoguided with Vixen SX2 mount
M46_20131204_VC200L_100Da_iso1600_6x240s_PTC.jpg
M46_20131204_VC200L_100Da_iso1600_6x240s_PTC.jpg (1.02 MiB) 已瀏覽 798 次
LT
週二 24 3月, 2020 21:51
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Horse head from PTC with ED80Sf
回覆: 107
觀看: 16624

Re: DSO 遺照集 -- M45 from PTC with 6" F4 Newtonian

42. M45 from PTC with 6" F4 Newtonian

Taken with DIY 6" F4 Newtonian + MPCC3 + LPS + 100Da @PTC in 2016 @600mm F4
13x240s @iso800, autoguided with Vixen SX2 mount

Maybe the best M45 image from PTC ever I have taken with DSLRs up to now.
M45_20161104_6F4_MPCC3_100Da_iso800_13x240s_PTC.jpg
M45_20161104_6F4_MPCC3_100Da_iso800_13x240s_PTC.jpg (933.32 KiB) 已瀏覽 978 次
LT
週一 23 3月, 2020 22:59
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Horse head from PTC with ED80Sf
回覆: 107
觀看: 16624

Re: DSO 遺照集 -- M57

41. M57 Taken with VC200L + reducer + LPS + 100Da @ PTC in 2015 @1280mm F6.4 3x240s @iso400, autoguided with Vixen SX2 mount Calibrated with bias only in DSS The OTA will be modified soon so as to improve the star image and diffraction issue happening on those bright stars. M57_20150615_VC200L_100Da...

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