The Propeller Nebula - Simeis 57

DWB 111 or Simeis 57, also known as the Propeller nebula is an emission nebula in the Cygnus constellation. The distance from Earth is unknown but it is only a small part of a larger emission nebula.

Technical details:

Optics: Vixen ED81s @ f/5.2

Mount: Skywatcher HEQ5 Synscan Pro (belt mod)

Guiding: ST-237 guide chip of SBIG ST2000XM

Camera: SBIG ST2000XM

Filter Wheel: SBIG CFW9

Filters: Ha,L,R,G,B

CCD Temperature: 0 degrees Celsius

Constellation: Cygnus

Date: August 4-6, 2021

Location: Korinthos - Greece - Albireo Observatory 1

Exposure:

L=12x600 min bin 1x1

R=12x300 min bin 1x1

G=12x300 min bin 1x1

B=12x300 min bin 1x1

Ha=18x1200 min bin 1x1

Calibration: Darks, Flats, Bias

The Muscleman Cluster: Stock 2 Open Cluster in Cassiopeia

 

Stock 2 (OCL 348, Lund 71 and the Muscleman Cluster) is a class I 2 m open cluster of 54 stars in Cassiopeia. This is one of 24 open clusters compiled by Jurgen Stock in the 1950s. A full list can be found here - http://www.deepskypedia.com/wiki/List:Stock.

Technical details:

Optics: Vixen ED81s @ f/5.2

Mount: Skywatcher HEQ5 Synscan Pro (belt mod)

Guiding: ST-237 guide chip of SBIG ST2000XM

Camera: SBIG ST2000XM

Filter Wheel: SBIG CFW9

Filters: Ha,L,R,G,B

CCD Temperature: 0 degrees Celsius

Constellation: Cassiopeia

Date: August 3-4, 2021

Location: Korinthos - Greece - Albireo Observatory 1

Exposure:

L=12x600 min bin 1x1

R=12x300 min bin 1x1

G=12x300 min bin 1x1

B=12x300 min bin 1x1

Calibration: Darks, Flats, Bias

NGC 6960 Western Veil Nebula: The Witch's Broom

 

Ten thousand years ago, before the dawn of recorded human history, a new light would have suddenly have appeared in the night sky and faded after a few weeks. Today we know this light was from a supernova, or exploding star, and record the expanding debris cloud as the Veil Nebula, a supernova remnant. This sharp telescopic view is centered on a western segment of the Veil Nebula cataloged as NGC 6960 but less formally known as the Witch's Broom Nebula. Blasted out in the cataclysmic explosion, the interstellar shock wave plows through space sweeping up and exciting interstellar material. The complete supernova remnant lies about 1400 light-years away towards the constellation Cygnus. This Witch's Broom actually spans about 35 light-years. The bright star in the frame is 52 Cygni, visible with the unaided eye from a dark location but unrelated to the ancient supernova remnant.

Technical details:

Optics: Vixen ED81s @ f/5.2

Mount: Skywatcher HEQ5 Synscan Pro (belt mod)

Guiding: ST-237 guide chip of SBIG ST2000XM

Camera: SBIG ST2000XM

Filter Wheel: SBIG CFW9

Filters: Ha,L,R,G,B

CCD Temperature: 0 degrees Celsius

Constellation: Cygnus

Date: August 14-15, 2021

Location: Korinthos - Greece - Albireo Observatory 1

Exposure:

L=12x600 min bin 1x1

R=12x300 min bin 1x1

G=12x300 min bin 1x1

B=12x300 min bin 1x1

Ha=18x1200 min bin 1x1

Calibration: Darks, Flats, Bias