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Old 12-06-2022, 03:24 PM
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CoolhandJo (Paul)
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Join Date: Oct 2008
Location: Sydney
Posts: 1,816
Rho Ophiuchi in 135mm (3 x firsts)

This represents a few firsts for me. First time used my HEq5 after belt modding it (cut my RMS error by almost 50%). First time imaged this target - used Samyang 135mm at F2.4. First time I didn't use a LP filter (I realized my east to Zenith targets sit in bortle 4!). This is 107 x 240sec RGB using ASI 533 MC pro with Svbony UV/IR (about 7 hours). I wasn't happy with the lack of Red in the image so I added 44 x 240 sec Ha (zwo 7nm) (about 3 hours). Processed in Pixinsight and Photoshop.

Astrobin https://astrob.in/byogc1/B/
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