Not expensive setup too:
SkyRover 70ED
LXD75
Canon Eos 400D (unmodified)
Total exposure time about 2mins 30 seconds (30s x 5)
Location : Fanling
响應平有平玩 - M31 by SR-70ED
响應平有平玩 - M31 by SR-70ED
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- V-B-1-Autolevel-B-C-BW.jpg (63.39 KiB) 已瀏覽 4303 次
Yes, the scope's focal length is 420mm. I took the photos at home's balcony so could not do the polar alignment well. I used 30s, ISO1600 to ensure no star trails,.. also because the sky background is not as dark as PTC's.willis 寫:Try ISO 1600. I guess the focal length of ur scope is less than 500mm. If u can do the polar alignment well. If is possible to have 60s exposure without much star trails after cropping. Can u show us 1 raw jpg?
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- IMG_8290s.JPG (153.16 KiB) 已瀏覽 4215 次
Eddy So 寫:在粉嶺村屋的露台上，不能對極軸也可在420 mm焦距下盲跟30秒，Steve兄真厲害！Steve 寫: Yes, the scope's focal length is 420mm. I took the photos at home's balcony so could not do the polar alignment well. I used 30s, ISO1600 to ensure no star trails,.. also because the sky background is not as dark as PTC's.
唔難啦...極軸大慨向北跟30秒ok啦, thanks!
在露台不能對極情況下只有少許拉長，是很有心機了.Steve 寫:Eddy So 寫:在粉嶺村屋的露台上，不能對極軸也可在420 mm焦距下盲跟30秒，Steve兄真厲害！Steve 寫: Yes, the scope's focal length is 420mm. I took the photos at home's balcony so could not do the polar alignment well. I used 30s, ISO1600 to ensure no star trails,.. also because the sky background is not as dark as PTC's.
唔難啦...極軸大慨向北跟30秒ok啦, thanks!
![[Good Job]](./images/smilies/onion_d5f02ecd.gif "Good Job")
找次在野外或PTC，一定掂......
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