Prime focus with a 8" dobsonian
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By Astro_Dad
Hi, there will be plenty written on this but I’d be grateful if anyone could point me in the direction of a well written beginners guide. I am awaiting delivery of a 10 inch Dobs (250p classic) and although will be primarily for visual use I’m interested to see what would be possible astrophotography wise (planetary) using my Celestron Skyris 132C cam. I assume something along the lines of the drift method - I’m not expecting miracles given the set up here but any advice or tips on this would be appreciated to help get started.
Clear Skies
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By MarsG76
This is NGC3603 and NGC3576 (AKA The "Statue of Liberty" nebula), a massive H-Alpha region containing a very compact open cluster, located in the constellation "Carina" about 20,000LY away.
I took this photo during two nights, 14th and 15th March 2021. Imaged using a active cooled and full spectrum modded Canon 40D DSLR attached to a 80mm f6.25 refractor on a CGEM equatorial mount.
Total exposure time was 3 Hours and 31 minutes in natural color through UV/IR Cut filtered subs from a semi rural sky.
RGB: 19x60s, 19x120s, 18x180s and 20x300s subs @ ISO1600.
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By MarsG76
This is NGC3603 and NGC3576 (AKA The "Statue of Liberty" nebula), a massive H-Alpha region containing a very compact open cluster, located in the constellation "Carina" about 20,000LY away.
I took this photo on multiple nights, between 19th February and 15th March 2021.
Imaged using my cooled and full spectrum modded Canon 40D DSLR attached to a Bosma 80mm f6.25 refractor on a CGEM equatorial mount.
Total exposure time was 22 Hours and 1 minute using 7nm HII, OIII and SII Narrowband filters and stars are from natural color (UV/IR Cut filter) subs... imaged from a semi rural sky.
HII: 6x600s, 6x900s and 4x1200s subs,
OIII: 10x900s, 8x1200s and 1x1800s subs
SII: 18x1800s subs
RGB: 19x60s, 19x120s, 18x180s and 20x300s subs @ ISO1600.
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By WiltsStarGazer
https://www.skyatnightmagazine.com/virtual-lecture/
Thursday 25th March 7 p.m. GMT £10
Could be worth a tenner on a cloudy night.
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