Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  10 Cas  ·  6 Cas  ·  9 Cas  ·  LBN 565  ·  LBN 566  ·  LBN 568  ·  LBN 571  ·  LBN 576  ·  LBN 577  ·  LDN 1252  ·  LDN 1255  ·  LDN 1263  ·  NGC 7788  ·  NGC 7790  ·  PK116+00.1  ·  Sh2-165  ·  Sh2-166  ·  Sh2-168  ·  Sh2-169  ·  Sh2-170  ·  The star 10Cas  ·  The star 6Cas  ·  The star 9Cas
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Cassiopea - Nearby CTB1 - 481 120 Secs unguided subs, Stefano Ciapetti
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Cassiopea - Nearby CTB1 - 481 120 Secs unguided subs

Getting plate-solving status, please wait...
Cassiopea - Nearby CTB1 - 481 120 Secs unguided subs, Stefano Ciapetti
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Cassiopea - Nearby CTB1 - 481 120 Secs unguided subs

Equipment

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Acquisition details

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Description

This image is the sum of 481 120 secs unguided subs taken during the nights of 21st and 29th of August 2021 from my home terrace. Setup is as follow:
Canon 70-200 F4 lens (at 100 FL) - ASI ZWO 533 - Ioptron smart eq - filter Optolong L-Extreme

My target was to image the CTB1  supernova remanent. It is a very weak subject, especially from my bortle 8 sky.  Image is almost unprocessed.

You can see the version A as the crop area of the supernova remanent. Version B is the full image

Aquisition has been done with Astorart and also processing. Processing was cropping and the gradient reduction routine.

After almost 16 hours of exposures, the CTB1  is visible. Not that clear, but it's there. Version A is the center cropped version.

Comments

Revisions

  • Cassiopea - Nearby CTB1 - 481 120 Secs unguided subs, Stefano Ciapetti
    Original
  • Cassiopea - Nearby CTB1 - 481 120 Secs unguided subs, Stefano Ciapetti
    B
  • Cassiopea - Nearby CTB1 - 481 120 Secs unguided subs, Stefano Ciapetti
    C
  • Final
    Cassiopea - Nearby CTB1 - 481 120 Secs unguided subs, Stefano Ciapetti
    D

B

Description: full version

Uploaded: ...

C

Description: crop and white balance in order to give a more natural appeal

Uploaded: ...

D

Description: Astroart 8 - DDP, denoise and color adjustment

Uploaded: ...

Sky plot

Sky plot

Histogram

Cassiopea - Nearby CTB1 - 481 120 Secs unguided subs, Stefano Ciapetti