M61-90

/M61-90

M81 LRGB

By | 2018-11-06T15:50:08+00:00 6 November 2018|Categories: Galaxy, M61-90, News|

Lots of gradients and stray light from somewhere coming in. Hard to process and as a result have lost the fainter outer arms.

Object ID M81 Bode’s galaxy
Mag. 6.94, Size 26.9′ x 14.1′
Ursa Major
Details 2018-11-1 21:59 – 22:47 UT
Telescope 250mm f4.8 Newtonian, MPCC
IDAS P2 LPR filter
Guided
Camera Atik 460EX, Baader LRGB  filters
Exposure(s) L 20x120s 1×1, RGB 10x60s 2×2 each
darks, flats were no good
Capture APT
Processing Nebulosity 4, Photoshop

M81 (NGC 3031)

By | 2017-01-30T14:12:41+00:00 22 January 2017|Categories: Galaxy, M61-90, News|

Spiral Galaxy, Ursa Major
Mag 6.9, size 21’x10′
2017-01-02
200mm f8 RC at f6 (Revelation x0.75 reducer)
Piggyback guiding with 70mm f/7 refractor
L 10×240s 2×2, RGB 10×120s 4×4 Darks Bias Flats
Atik 460EX (-25C), LRGB filters, IDAS P2 LPR filter
Captured in APT, Processed in Nebulosity3, PS CC, LightRoom

Terrible trouble with LP, noise and flats. Hard to process out the flaws.

Messier 81 (also known as NGC 3031 or Bode’s Galaxy) is a spiral galaxy about 12 million light-years away in the constellation Ursa Major. Due to its proximity to Earth, large size and active galactic nucleus (which harbors a 70 million M☉ supermassive black hole), Messier 81 has been studied extensively by professional astronomers. The galaxy’s large size and relatively high brightness also make it a popular target for amateur astronomers.

Messier 81 was first discovered by Johann Elert Bode on December 31, 1774. Consequently, the galaxy is sometimes referred to as “Bode’s Galaxy”. In 1779, Pierre Méchain and Charles Messier reidentified Bode’s object, which was subsequently listed in the Messier Catalogue.

Wikipedia

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M64 (NGC 4826) Blackeye Galaxy

By | 2013-11-03T16:39:40+00:00 30 April 2013|Categories: Galaxy, M61-90, News|

Galaxy, Coma Berenices
Mag 9.36 Size 9.3′ x 5.4′
2013-04-29
200mm f8 RC, piggyback guiding C80ED
6×120 10×180 5×240 ISO 1600, darks, flats
Canon EOS 350D modded, Astronomik CLS
Captured in APT, Processed in Nebulosity, PS CS5

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M71 (NGC 6838)

By | 2013-11-03T16:44:11+00:00 29 August 2009|Categories: Globular Cluster, M61-90|

Globular Cluster, Sagitta
Mag 8.2 Size 7.2′
2010-08-15
200mm f5 Newtonian, Canon 350D
Guided, SW LPR filter, MPCC
3x120s subs before clouds
Processed in Nebulosity and  PhotoShop CS5
First use of new Skywatcher LPR filter.
Doesn’t really look like a globular – in fact it wasn’t classified as one for a while.

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