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Sh2-101 - Tulip Nebula with Cygnus X-1

Technical card

Imaging telescope or lens: Skywatcher Explorer 200PDS

Imaging camera: QHYCCD QHY9M

Mount: Skywatcher NEQ6 PRO Synscan

Guiding telescope or lens: Skywatcher 9x50 finderscope

Guiding camera: QHYCCD QHY5L-IIc

Focal reducer: Baader MPCC Mk III

Software: Pixinsight

Filters: Baader Red 2"Baader L 2''Baader Blue 2"Baader Green 2"

Accessories: QHYCCD QHY 2" Filter wheelSeletek Armadillo

Resolution: 3218x2451

Dates: Oct. 3, 2016

Baader Blue 2": 10x300" -20C bin 1x1
Baader Green 2": 10x300" -20C bin 1x1
Baader L 2'': 25x300" -20C bin 1x1
Baader Red 2": 10x300" -20C bin 1x1

Integration: 4.6 hours

Flats: ~15

Bias: ~100

Avg. Moon age: 2.26 days

Avg. Moon phase: 5.67% job: 1266092

RA center: 299.946 degrees

DEC center: 35.250 degrees

Pixel scale: 1.108 arcsec/pixel

Orientation: 175.836 degrees

Field radius: 0.622 degrees

Locations: Puolivälinkangas - Oulu, Oulu, Finland


Edit2: Here's a video tour from Earth to Cygnus X-1: Youtube

Edit: I've marked the location of Cygnus X-1. It is a strong X-ray source identified in 1962 as a binary star system, with the black hole orbiting the star HDE 226868.

I think this my first Sharpless nebula. It was fairly easy to process, although it would've benefited from longer exposures and ofc Ha.

wiki: Sharpless 101 (Sh2-101) is a H II region[1] emission nebula located in the constellation Cygnus. It is sometimes also called the Tulip Nebula because it appears to resemble the outline of a tulip when imaged photographically. It was catalogued by astronomer Stewart Sharpless in his 1959 catalog of nebulae. It lies at a distance of about 6,000 light-years (5.7×1016 km; 3.5×1016 mi) from Earth.

Sh2-101, at least in the field seen from earth, is in close proximity to microquasar Cygnus X-1, site of one of the first suspected black holes. Cygnus X-1 is the brighter of the two stars (lower star) in close vertical proximity just to the right of Sh2-101 in the image presented here.[2]




Sky plot

Sky plot


Sh2-101 - Tulip Nebula with Cygnus X-1,