Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  Iris Nebula  ·  NGC 7023  ·  VdB139
Getting plate-solving status, please wait...
ngc7023 - over 16 hours unguided exposures in 4 nights, Stefano Ciapetti
Powered byPixInsight

ngc7023 - over 16 hours unguided exposures in 4 nights

Getting plate-solving status, please wait...
ngc7023 - over 16 hours unguided exposures in 4 nights, Stefano Ciapetti
Powered byPixInsight

ngc7023 - over 16 hours unguided exposures in 4 nights

Equipment

Loading...

Acquisition details

Loading...

Description

Image taken during the nights of 19, 20, 21 and 22nd of July with a Newton Orion 250 f 3.9, a QHY183M cooled camera on top of a Ioptron CEM60 EC. The exposures are 1100 60 secs unguided exposures. Taken with Astroart.

Some processing (stacking, dark substraction, star elongation correction) with Astroart. Remaining with PS.

The Iris Nebula (also known as NGC 7023 and Caldwell 4) is a bright reflection nebula in the constellation Cepheus. The designation NGC 7023 refers to the open cluster within the larger reflection nebula designated LBN 487.

The nebula, which shines at magnitude +6.8, is illuminated by a magnitude +7.4 star designated SAO 19158. It is located near the Mira-type variable star T Cephei, and near the bright magnitude +3.23 variable star Beta Cephei (Alphirk). It lies 1,300 light-years away and is six light-years across. (Wikipedia)

Comments

Revisions

  • ngc7023 - over 16 hours unguided exposures in 4 nights, Stefano Ciapetti
    Original
  • Final
    ngc7023 - over 16 hours unguided exposures in 4 nights, Stefano Ciapetti
    B

B

Description: increased contrast using curves

Uploaded: ...

Sky plot

Sky plot

Histogram

ngc7023 - over 16 hours unguided exposures in 4 nights, Stefano Ciapetti