NGC 4236 (also known as Caldwell 3) is a barred spiral galaxy located in the constellation Draco. NGC 4236 is a member of the M81 Group, a group of galaxies located at a distance of approximately 11.7 Mly (3.6 Mpc) from Earth. The group also contains the well-known spiral galaxy Messier 81 and the well-known starburst galaxy Messier 82.

Imaging telescopes or lenses: Orion Optics UK CT8
Imaging cameras: SBIG ST-8300C, SBIG ST-8300M
Mounts: Losmandy G11
Guiding telescopes or lenses: Orion Optics UK CT8
Guiding cameras: Starlight Xpress Lodestar guide camera
Focal reducers: Baader Planetarium RCC
Software: Maxim DL, photoshop
Filters: Hutech IDAS LPS-P2
Accessories: Celestron Radial Guider
Dates: May 6, 2014
Frames: Hutech IDAS LPS-P2: 40×600″ bin 1×1
Integration: 6.7 hours

Author: Jacek Bobowik
AstroPhotography of the day by SPONLI 29 June 2014