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LT
週五 09 2月, 2024 23:13
版面: 天文攝影 Astrophotography
主題: LT 的 Nightscape 相集 -- Milky way taken in SA
回覆: 24
觀看: 3962

Re: LT 的 Nightscape 相集 -- Milky way high over in the sky

10. Milky way high over in the sky

Taken with EF8-15mm f/4L + unmodified 6D in Australia in 2015 @15mm f/4
Single shot of 240s @iso2000
Unguided with Vixen Polarie star tracker
Processed in PS
FB_6D_IMG_1299.jpg
FB_6D_IMG_1299.jpg (1.11 MiB) 已瀏覽 538 次
LT
週一 05 2月, 2024 23:02
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 -- Cage for VMC110L
回覆: 66
觀看: 14014

Re: LT 的 DIY 及 modified 天文器材配件相片集 -- 6" F4 Newtonian OTA

23. 6" F4 Newtonian OTA

Seems I can bring this Newtonian with my trips to oversea this year.
6F4_OTA.jpg
6F4_OTA.jpg (382.83 KiB) 已瀏覽 254 次
LT
週五 02 2月, 2024 23:24
版面: 天文攝影 Astrophotography
主題: Gallery of single shot -- Scorpius is falling down
回覆: 61
觀看: 10298

Re: Gallery of single shot -- vertical milky way

21. Vertical milky way

Taken with Sigma 15mm f/2.8 + unmodified 1100D in Coonabarabran in 2012 @f/2.8
25s @iso1600
Stationary
FB_IMG_0049_PS.jpg
FB_IMG_0049_PS.jpg (891.01 KiB) 已瀏覽 659 次
LT
週二 23 1月, 2024 00:10
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- NGC7000
回覆: 477
觀看: 95852

Re: DSO 遺照集 -- M42 (3 sets of data)

174. M42 (a stack of 3sets of data) This is a stack of the following sets of data taken with same aperture Newtonian of 6" F4 + Vixen coma corrector PH in Yuen Long @570mm F3.8 1. 15x300s taken with ZWO 071C cooled camera at 20221221, 2. 25x120s @iso400 with 100Da at 20240103, and 3. 41x120s @iso400...
LT
週六 20 1月, 2024 23:06
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- NGC7000
回覆: 477
觀看: 95852

Re: DSO 遺照集 -- M42 with 6' F5

173. M42 taken with 6" F5 Newtonian Taken with my DIY 6" F5 Newtonian + TV paracorr + 100Da in Yuen Long last night @875mm F5.75 12x60s @iso800, with dark, flat and bias calibrated in PI Autoguided with Vixen SXD2 mount Transparency = 8/10 and 1st half moon Just a test shot to check for the diffract...
LT
週三 17 1月, 2024 23:39
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- NGC7000
回覆: 477
觀看: 95852

Re: DSO 遺照集 -- M42 (2 night data)

172. M42 (2 night data)

A result of combinning 2 sets of data taken in Yuen Long on Jan 3rd and Jan 14th separately with the same setup of 6" F4 Newtonian + 100Da

Jan 3rd: 25x120s @iso400
Jan 14th: 41x120s @iso400
Total integration exposure = 132 mins
FB_M42_stack.jpg
FB_M42_stack.jpg (1.2 MiB) 已瀏覽 933 次
LT
週三 17 1月, 2024 09:51
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- NGC7000
回覆: 477
觀看: 95852

Re: DSO 遺照集 -- M42 (2nd try)

171. M42 (2nd try) Taken with DIY 6" F4 Newtonian + Vixen coma corrector PH + LPS + 100Da in Yuen Long on Jan 14th @570mm F3.8 41x120s @iso400, with flat, dark and bias calibrated in PI Bortle 8, transparency = 7-8/10 Processed in PI and PS Tried to figure out the reasons causing these urgly diffrac...
LT
週一 15 1月, 2024 11:30
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 -- Cage for VMC110L
回覆: 66
觀看: 14014

Re: LT 的 DIY 及 modified 天文器材配件相片集 -- Tube rings for 6" Newtonian

22. Tube rings for 6" Newtonian

Tailor made a pair of tube rings for my travel 6" F4 Newtonian last week so as to reduce the weight of the whole setup brought wirh my trips to overseas later.
FB_rings_6F4.jpg
FB_rings_6F4.jpg (489.46 KiB) 已瀏覽 424 次
LT
週一 08 1月, 2024 23:11
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- NGC7000
回覆: 477
觀看: 95852

Re: DSO 遺照集 -- M42 (reprocessed)

Reprocessed with flat calibrated.
FB_M42_flat-cal.jpg
FB_M42_flat-cal.jpg (1.49 MiB) 已瀏覽 1202 次
LT
週四 04 1月, 2024 23:43
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- NGC7000
回覆: 477
觀看: 95852

Re: DSO 遺照集 -- M42

170. M42

A test shot taken with my DIY 6" F4 travel Newtonian last night

6" F4 Newtonian + Vixen corrector PH + LPS + 100Da in YL last night @570mm F3.8
24x120s @iso400, with dark and bias calibrated in PI
Autoguided with Vixen SXD2 mount
Processed in PI and PS
FB_M42_6F3-8_iso400_24x120s_YL.jpg
FB_M42_6F3-8_iso400_24x120s_YL.jpg (1.29 MiB) 已瀏覽 1339 次
LT
週二 02 1月, 2024 00:48
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- NGC7000
回覆: 477
觀看: 95852

Re: DSO 遺照集 -- NGC3372

169. NGC3372 Eta Carinae Nebula

Taken with Vixen FL55SS + reducer + M6a in Australia in 2019 @234mm F4.3
15x150s @iso1600, with dark calibrated only in PI
Autoguided with Vixen AP mount
Processed in PI and PS
FB_NGC3372_M6a_iso1600_15x150s.jpg
FB_NGC3372_M6a_iso1600_15x150s.jpg (1.67 MiB) 已瀏覽 1430 次
LT
週五 29 12月, 2023 23:43
版面: 天文話題 Everything about Astronomy
主題: 回顧
回覆: 2
觀看: 676

回顧

每次到年尾就會有什麼什麼回顧, 也就來一個回顧. 回望半世人生, 曾DIY過那些望遠鏡呢? 1. 5cm F20 單鏡片紙筒折射式望遠鏡 2. 8” F5 牛頓式反射望遠鏡 3. 12.5" F6 牛頓式反射望遠鏡 4. 8cm F7.5 消色差折射式望遠鏡 5. 10cm F3.8 消色差射式望遠鏡 6. 10" F6 牛頓式反射望遠鏡 7. 12.5" F5 牛頓式反射望遠鏡 8. 8" F6 牛頓式反射望遠鏡 9. 10" F15 卡式反射鏡 10. 10“ F3.5 牛頓式反射望遠鏡 11. 4.5" F5 牛頓式反射望遠鏡 12. 10" F4.7 牛頓式反射望遠鏡 13. 8" F...
LT
週四 28 12月, 2023 00:22
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- NGC7000
回覆: 477
觀看: 95852

Re: DSO 遺照集 -- M33

168. M33 A combination of L data taken at the beginning of this month this year and RGB data taken in 2018 L data: 35x300s with flat, dark and bias calibrated in PI, Bortle 7-8 Vixen SD115S apo refractor + HD flattener + 1600MM @PTC @908mm F7.9 Autoguided with SXD2 mount RGB data: R=B=G=8x300s captu...
LT
週五 15 12月, 2023 00:30
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 -- Cage for VMC110L
回覆: 66
觀看: 14014

Re: LT 的 DIY 及 modified 天文器材配件相片集 --Offset secondary holder

21. Offset secondary mirror holder

Making an offset secondary mirror holder for my travel Newtonian 6" F4.
offset_hoder.jpg
offset_hoder.jpg (271.6 KiB) 已瀏覽 812 次
LT
週二 05 12月, 2023 23:37
版面: 天文話題 Everything about Astronomy
主題: Which one do you think looking a bit better
回覆: 2
觀看: 214

Which one do you think looking a bit better

Below shows two images with color calibration in two different tools separately after using DBE tool in PI. One was applied with unlinked STF for brightness adjustment directly while another was brightness adjusted using linked STF after PCC tool applied. Then both were inputted into PS for fine adj...

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