Celestial hemisphere:  Northern  ·  Constellation: Cancer (Cnc)  ·  Contains:  IC 523  ·  PK219+31.1  ·  Sh2-290
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Abell 31 large PN, Riedl Rudolf
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Abell 31 large PN

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Abell 31 large PN, Riedl Rudolf
Powered byPixInsight

Abell 31 large PN

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Description

This are 2 pictures from the large PN Abell 31.

The first picture was taken with the Sharpstar in March, the 2nd with the SW80ED in February. Both under almost the same sky conditions - Sharpstar SQM 21.5 - ED80 SQM 21.4; temperature gap is 1 degree only

Sharpstar is f3,2 and the SW80ED is f6,4. The pictures are not too different but very different are the exposure times. Both pictures at same basic settings - 1600 ASA with Nikon D5100a.

Total exposure SW80ED 41 x 10 min = 410 min

Total exposure Sharpstar 17 x 5 min = 115 min

Both pictures with same NB1 dualband filter and both are cropped for same field of view

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Revisions

  • Final
    Abell 31 large PN, Riedl Rudolf
    Original
  • Abell 31 large PN, Riedl Rudolf
    B

B

Description: Picture with SW80ED at f6,4 fl 510mm

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Abell 31 large PN, Riedl Rudolf

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