Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)
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 LDN 1355/7 LBN 643 VdB 9 & 7 - The Helping Hand, Paddy Gilliland
 LDN 1355/7 LBN 643 VdB 9 & 7 - The Helping Hand
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LDN 1355/7 LBN 643 VdB 9 & 7 - The Helping Hand

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 LDN 1355/7 LBN 643 VdB 9 & 7 - The Helping Hand, Paddy Gilliland
 LDN 1355/7 LBN 643 VdB 9 & 7 - The Helping Hand
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LDN 1355/7 LBN 643 VdB 9 & 7 - The Helping Hand

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Description

Where to begin!

Here is LDN 1355/7 LBN 643 (the Dust) VdB 9 & 7 (the reflection nebulae), taken under average UK skies, that was my first mistake but persevered as wanted to see what the RH was capable of. 331 subs Lum 43x300, 50x30 and 220 x 180, R/G/B @ 120 21/20/20.

To say this was my most challenging target to date would be a massive understatement. VdB 9 is a class II, F, Mod reflection nebula. II meaning it has no internal stars illuminating, F for faint and mod for moderate light absorption. If you compare to say VdB 126 at I (internal star), Bright and Strong LDN 1355/7 LBN 643 VdB 9 & 7 are 10's or maybe 100's of times dimmer in comparison.

In some areas of the sky this may not have been such an issue but this is in a star rich area which presented all sorts of challenges. The net result is the brightness of the stars, by comparison is amplified versus the dust, to go deep enough to pull the object out meant handling the massively bloated stars.

In part this was addressed with patience (not my strong point) acquiring 270 lum frames (50 at 30 seconds specifically for star management). Even with the 30's for HDR I had to pull every trick i had out of the bag to produce this image. Under darker skies this would be a super target, under UK skies certainly a challenge.

As if that was not enough it appears a moth was rather fond of my scope, going about its last hours of life moving around the front lens. So for 100+ frames i also had to deal with a mobile moth mote!

Towards the lower right of the frame you can also see VdB 7.

Rev B - few minor tweaks and a little more noise which i think increases the detail but c&c welcome on that.

Hope you enjoy.

Comments

Revisions

  •  LDN 1355/7 LBN 643 VdB 9 & 7 - The Helping Hand, Paddy Gilliland
    Original
  • Final
     LDN 1355/7 LBN 643 VdB 9 & 7 - The Helping Hand, Paddy Gilliland
    B

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 LDN 1355/7 LBN 643 VdB 9 & 7 - The Helping Hand, Paddy Gilliland

In these public groups

UK Astro-Imaging