Short exposures Astrophotography by Peter Bresseler
Most of my astrophotography time is spend on deepsky imaging using lucky imaging techniques, this means short exposures in the range of 500 ms to 5 seconds per sub. With short exposures you do not need an expensive mount, auto-guiding is also not needed and the frames you take are often sharper. I can not take images more than 1.5 - 2 hours per session, because at home I have a limited field of view due to large trees and houses of neighbors...it is my little challenge.
Campbell's Hydrogen Star, size 6", PK64+5.1, Henize 2-438, ASI294MC PRO, 6x300x1 s., (1 s. subs) - Celestron C11 EdgeHD, f/10
NGC 7027, size 16", ASI294MC PRO, 6x600x0.5 s., (0.5 s. subs) - Celestron C11 EdgeHD, f/10
Perseus A NGC 1275 Super Cluster - Celestron RASA C11
NGC3718 Galaxy group - Celestron RASA C11
Edge on galaxy NGC7814 little sombrero - Celestron RASA C11
J014709+463037 or Andromeda Parachute, size 3", a quad lensed quasar 11 billion light-years away - Celestron C8
The Celestron RASA 11" f/2,2 Rowe-Ackermann Schmidt Astrograph is a dedicated instrument, it can only be used at f/2.2 like a Schmidt-Camera. The RASA C11 is not a lightweight, it has a tube weight of 43 lbs (19.5 kg).
Lucky Imaging is an effective technique for delivering near-diffraction-limited imaging on telescopes.
The most successful type of data collection by the amateur is the transit method. As a planet passes over the portion of the star facing us, the light curve of the star drops for a time. As the planet passes through, the light curve returns to normal.
You can further improve resolution of your images by improving your FWHM.