combined36min.jpg

Crescent nebula

70mm skywatch refractor
canon 1100d

iso 3200
exposure : 2 X 20min sessions of 1sec frames

Seems that nebulas with brightness around 13mag/arcmin^2 is scopes limit. At least in summer.

put together all data i have on Crescent nebula - 63mins(1sec X ~3700) of exposure. When playing around in photoshop, it seems that right side of it is also visible, but super faint. Maybe with 2-3hrs of exposure it would be possible to get whole nebula. It seems that single frame exposure might be a bit longer as there are some very tiny details distinguishable when comparing to google images by putting them one over another.