Messier 81 & 82 - Widefield
Whilst we were working on our TEC 140 mosaic of M81 and M82, Barry and I decided to try for a wider field view of the same area using our Takahashi 106 and QSI 683. We decided that in the wider view, we would aim to present the rich IFN. We wondered if 20 minute Luminance subs (as opposed to our usual 10 minute subs) might be more effective at bringing this to the fore.
The Integrated Flux Nebula is, of course, extremely faint and so a balance needs to be struck between making it visible, but not ‘un-natural’.
Since we already had the high resolution TEC data it seemed sensible to incorporate this in an attempt to give finer detail to the galaxy cores. This gave rise to a rather absurd total integration time.
Messier 81 and Messier 82 are around 12 million light years away in the constellation of Ursa Major.
Data for image were collected between 6 February 3 March 2019 from a remote imaging rig in Spain owned and operated by Barry Wilson and Steve Milne.
Capture details are as follows:
Telescope: Takahashi FSQ 106
Camera: QSI 683
Mount: 10 Micron GM1000HPS
Ha: 30x 1200s
Lum: 44 x 1200s
Red: 27 x 600s
Green: 27 x 600s
Blue: 27 x 600s
Camera: QSI 690
Mount: 10 Micron GM2000HPS
Ha: 48x 1200s
Lum: 96 x 600s
Red: 48 x 600s
Green: 48 x 600s
Blue: 48 x 600s
A total of 94 hours and 10 minutes exposure (but see above).
Data capture: Steve Milne & Barry Wilson
Image Processing: Steve Milne
Messier 81M81M 81Messier 82M 82M82NGC 3031NGC3031NGC 3034NGC3034Cigar GalaxyBode's GalaxyBode's NebulaconstellationUrsa MajorGreat BearPloughBig DipperArps Loopthe capintegrated flux nebulaIFN