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Camera Assisted Observing (EAA) - Oberserving using very short exposures

In this gallery I have selected observations that illustrate what is possible in terms resolving detail and/or going deep using very short exposures. The new incredibly sensitive CMOS based sensors enable a truly live observing experience using stacking and very short exposures. The image literally builds right before your eyes.

All images are live stacks at the scope (no post processing) of very short sub exposures, typically 1-15s, with SharpCap using the ASI290MM on my 8" XLT Celestron SCT from my Bortle Red/White Backyard.

M87 Jet: Relativistic jet of matter of the giant eliptical M87 in the heart of the Virgo Cluster

Revisited M87 Jet: Revisted the jet in Apr 2019

Andromeda's Parachute: Quad lensed quasar. Look for the distinctive parachute shape

Siamese Twins: These are pair of interacting/colliding galaxies in the Constellation of Virgo

Copelands Septet HCG 57: One of the most interesting Hickson Compact Groups. Just 20x15s!

M64: Also known as the Black Eye Galaxy located in Coma Berenices

Twin Quasar: Mag 17 gravitationally lensed quasar in UMA in just 15x4s!

Sketching

Sketching at the eyepiece with a variety of scopes

Mars: Mars as observed from my backyard during the opposition of Summer 2018 with my Tak 76DCU

NGC 6543 Cats Eye PN: Observed from my backyard with my Celestron C9.25 XLT @ 671x

Colorful Objects - From our local Milky Way neigbourhood

Live stacks using less than 60s sub exposures taken with a wide variety of cameras over the years including the ASI224MC, ASI385MC, ASI294MC Pro and the Atik Infinity. Sub exposure time for the CMOS based cameras tends to be tyically less than 15s, sometimes 30s.