AP#85 : M27
Name: The "dumbbell" nebula.
Constellation:Vulpecula
Instrument:
Image 1: 8-inch F5 reflector with Sky Watcher coma corrector and a modified Canon T6i.
Image 2: 8-inch F5 reflector with Sky Watcher coma corrector and an ASI 585 (Gain 200 -20c)i.
Exposure time:
Image 1: A stack of 16 five-minute exposures at ISO 800.
Image 2: A stack of 30 three-minute exposures.
Star Chart from Michael Vlasov's Deep sky hunter star atlas available on line https://www.deepskywatch.com/deep-sky-hunter-atlas.html
Magnitude: 7.4
Angular size: 8' X 5.6'
This nebula falls under the 10' limit but the shape and nature of the object makes it an astrophotography target that deserves to be on the list. This nebula can be found at the tip of an "M"-shaped asterism of stars. Visually, in small telescopes, the object looks rectangular in shape that resolves into two ovals side-by-side. In larger instruments the fainter features become visible and makes the "dumb bell" shape less obvious.
This image was taken with an ASI 585 using the same telescope.
