Leo Triplet, tracker+Canon 400mm (TStew)

Celestial hemisphere: Northern · Constellation: Leo (Leo) · Contains: M 65 · M 66 · NGC 3623 · NGC 3627 · NGC 3628

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Leo Triplet, tracker+Canon 400mm

Revision title: take 2, Apr 2023

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Leo Triplet, tracker+Canon 400mm

Revision title: take 2, Apr 2023

After Orion moved out of view half way through the night I decided to start early on some spring galaxies that are beginning to rise late at night. Here we have a somewhat short session on the Leo Triplet with my budget tracker & dslr setup.

Edit 2023, version 2:
I decided to revisit this target with the identical gear. Main difference is I used a 62mm aperture mask to hopefully tame the star artifacts. It helped a little, still not perfect. I decided to leave the old data seperate, so each version is its own, the original is the 98 subs, the v2 is 360 subs.

I made some mistakes with the 2023 session, mainly I forgot to refocus before going to bed the second night, had to throw out half the subs as they were too defocused. Also most the subs I kept were very noisy and ended up with some walking noise I had to tame. I forgot to shut of the LCD and the camera got hot. The first night, sensor reported 15-20c while the second night at approximately same ambient temps I was wunning 45c because I forgot to shut off the LCD, darn it! I'd have nearly double the data, and data would be cleaner, had I not made a few mistakes.

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Title: take 2, Apr 2023

Description: I came back to the triplet this year with the exact same rig, but I used an aperture mask down to 62mm to hopefully eliminate the star artifacts. I decided not to combine the old data so they are separate sessions.

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Astrometry.net job	7584713
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Leo Triplet, tracker+Canon 400mm

Revision title: take 2, Apr 2023

Leo Triplet, tracker+Canon 400mm

Revision title: take 2, Apr 2023

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Contribution Index (beta):

Leo Triplet, tracker+Canon 400mm

Revision title: take 2, Apr 2023

Leo Triplet, tracker+Canon 400mm

Revision title: take 2, Apr 2023

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