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LT
週四 26 3月, 2020 23:52
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33746

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 2947 次
LT
週三 25 3月, 2020 23:11
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33746

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 2969 次
LT
週二 24 3月, 2020 21:51
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33746

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 2976 次
LT
週一 23 3月, 2020 22:59
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33746

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...
LT
週一 23 3月, 2020 15:18
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33746

Re: DSO 遺照集 -- M45 with 100Da

40. M42 taken with 6" F5 newtonian and 100Da Taken with 6"F5 Newtonian + MPCC (for film) + LPS + 100Da @PTC in 2013 @750mm F5 9x240s @iso800, autoguided with Vixen SXD mount By comparing with the one taken with 300Da, maybe you can see something different in resolution. M45_20131108_6F5_100Da_iso800...
LT
週六 21 3月, 2020 21:55
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 -- Another component of 10" mirror cell
回覆: 15
觀看: 2303

Metal knobs for Vixen AXJ mount

2. Metal knobs for Vixen AXJ mount

AXJ mount的極軸調校螺絲的擰頭是用鬆動橫捍式的,因arm length頗長,可以非常微細調角度,但我並不太喜歡;而且收納赤道儀有時會帶來一些不便,所以便特意用鋁合金製作了2個大擰頭來更換。
Knob_01.jpg
Knob_01.jpg (206.78 KiB) 已瀏覽 1803 次
Knob_02.jpg
Knob_02.jpg (291.08 KiB) 已瀏覽 1803 次
LT
週六 21 3月, 2020 21:43
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 -- Another component of 10" mirror cell
回覆: 15
觀看: 2303

Re: LT的 DIY 及 modified 天文器材配件相片集

1. DIY 42mm illuminated star finder
之前的貼文已有敘述過,現在只在這相片集再重貼。
DIY_finder.jpg
DIY_finder.jpg (275.59 KiB) 已瀏覽 1803 次
LT
週六 21 3月, 2020 20:06
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 -- Another component of 10" mirror cell
回覆: 15
觀看: 2303

LT的 DIY 及 modified 天文器材配件相片集 -- Another component of 10" mirror cell

我個人對設計、修改和DIY各式各樣的天文器材及配件的興趣 >> 修圖。自懂一些金工加工的技術後,經常對著機床製作一些天文器材及配件給天文同好和自己使用,不知不覺已超過20年。過往不時有在這裡貼文貼相片。近日忽發其想,不如設一相集,可方便自己和論壇之友一同回顧。
LT
週五 20 3月, 2020 22:06
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33746

Re: DSO 遺照集 -- M42 with VC200L

39. M42 with VC200L

Taken with VC200L + reducer + LPS + 100Da @PTC in 2013 @1280mm F6.4
5x600s @iso800, autoguided with SX2 mount
Calibrated with bias only in DSS
M42_20131204_VC200L_100Da_iso800_5x600s_PTC.jpg
M42_20131204_VC200L_100Da_iso800_5x600s_PTC.jpg (1.13 MiB) 已瀏覽 3119 次
LT
週四 19 3月, 2020 23:36
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33746

Re: DSO 遺照集 -- Leo Triplet with ED80Sf

38. Leo Triplet with ED80Sf

Taken with ED80Sf + reducer +LPS + 100Da in PTC in 2014 @510mm F6.4
13x240s @iso1600, autoguided with Vixen GP2 photoguider in RA direction only
Leo-Trio_20140302_ED80Sf_100Da_iso1600_13x240s_PTC.jpg
Leo-Trio_20140302_ED80Sf_100Da_iso1600_13x240s_PTC.jpg (1.33 MiB) 已瀏覽 3144 次
LT
週四 19 3月, 2020 00:05
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33746

Re: DSO 遺照集 -- NGC281 with 6"F4 newtonian from PTC

37. NGC281 Taken with 6" F4 Newtonian + MPCC3 + LPS + 100Da @PTC in 2016 @600mm F4 31x240s @iso800, autoguided with Vixen SX2 mount By comparing to the one taken with 6" F5 + 300Da, seemed there was not much improvement on the detail captured, though longer exposure had been attempted. NGC281_201611...
LT
週二 17 3月, 2020 23:35
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33746

Re: DSO 遺照集 -- Jelly Fish from PTC

36. Jelly Fish

Taken with 6" F4 Newtonian + MPCC3 + LPS + 100Da @PTC in 2016 @600mm F4
16x240s @iso800, autoguided with Vixen SX2 mount
Jelly_20161104_6F4_100Da_iso800_16x240s_PTC.jpg
Jelly_20161104_6F4_100Da_iso800_16x240s_PTC.jpg (1.1 MiB) 已瀏覽 5277 次
LT
週一 16 3月, 2020 00:17
版面: 二手交易場 Second Hand Area
主題: Tak FSQ85 OTA for sale (SOLD)
回覆: 3
觀看: 3366

Re: Tak FSQ85 OTA for sale (SOLD)

SOLD !!!
LT
週六 14 3月, 2020 22:26
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33746

Re: DSO 遺照集 -- Stacked image of M45 from TMS and PTC

A stack of Image #33 and #34

9x180s + 15x240s @iso800 with ED70SS + flattener + LPS + 300Da

No gain on details but seemed the noise level was improved a little bit.
M45_ED70SS_stack.jpg
M45_ED70SS_stack.jpg (1.27 MiB) 已瀏覽 5596 次

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