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About this blog

Work in progress blog on one of my summer targets: The Western Veil Nebula

Entries in this blog

 

Western Veil Nebula WIP

So the last week was kind and I managed another couple of sessions under the stars.
The lack of dark nights has made this a labor of love indeed.   I have gathered 5 hours for each Ha pane so I have managed one of my bonus goals.   Total integration time so far is 17 Hours:
  I may not add any more data to this until the darker skies return :sad:   Project status
Stage 1 - Complete
Stage 2 - Complete
Stage 3 - Skipped
Stage 4 - 0% Complete
Stage 5 - Complete

Robp

Robp

 

Western Veil Nebula WIP

So I think I may be dreaming but there has been lots of clear nights here recently (and an almost whole week of clear skies forecast to come!)
This has meant that I have been able to gather lots of data.   I have completed gathering the HA and OIII data for stage one and two. Total time so far is 12 Hours 30 minutes total integration time.   I have done a quick process of the data in a HOO palette
  I am quite happy so far. One side seems lighter than the other so I'll have to work on how I produce the mosaic   I can't start the SII stages as I haven't purchased that filter yet so I'm going to press on with the HA and OIII and see if I can hit my bonus goals for these filters of 5 hours per mosaic pane to produce an image of 20 hours integration time in a HOO Palette   Stage one - Completed
Stage two - Completed

Robp

Robp

 

Western Veil Nebula WIP - Nearing the end of stage one

I managed 1 Hour 45 Minutes of subs on the second pane of the Ha layer last night. It was a beautiful clear night for a while but then the clouds rolled on in around 1:30am so I packed up.   I have done a quick stretch and stitch so I now know that my framing is as I wanted it.
I haven't taken any flats for this pane yet. I was hoping to do them today when I got home from work but it is raining rather heavily right now :sad:     Seems like there may be another couple of breaks in the cloud this week so it shouldn't take me to long to finish Just another 45 minutes of data gathering to go, a bit of processing and I can move on to stage two!   Stage one 40% complete

Robp

Robp

 

Western Veil Nebula WIP - framing and first pane

So I used a CCD field of view calculator to work out the framing of the nebula.   I left a little overlap between the two panes. The image of the nebula in the framing isn't my own, but the default image provided by the calculator:
  The target is very low on the horizon at the moment and within the most light polluted portion of my available sky. It also isn't very dark at the moment during the nights but I couldn't pass up on a clear skies.   I managed 2 hours and 30 minutes after throwaway subs (there was some wind), just enough to hit my goal for that pane.
Whilst it int the best quality due to the conditions, it will do until I get a chance to take something better.   The image is 10x15 minutes in Ha with flats and bias frames applied. I have done a quick stretch to bring out the detail a bit but nothing to serious.
  Stage one is now 40% complete

Robp

Robp

 

Western Veil Nebula WIP - Goals

I'm starting this blog with the intention of imaging the Western Veil Nebula this summer   My main goal is to complete a two pane narrowband mosaic with each pane consisting of 2 Hours 30 minutes of data from HA, OIII and SII (Total of 15 hours integration time).   My bonus goal is to complete a two pane narrowband mosaic with each pane consisting of 5 Hours of data from HA, OIII and SII (Total of 30 hours integration time).   The equipment I shall be using to gather the images are:   Mount: HEQ5
Scope: 130pds
Camera: Atik 314L+
Guide scope: 9x50 finder
Guide camera: QHY5L-II-C
Ha filter - Baader 7nm
OIII filter - Baader 8.5nm
SII filter - Not known yet (to be purchased)
RGB Filterset - Baader CCD filter set   To determine how close I am to my goal and to use the clear sky time wisely I have broken everything down into stages   Main goal:
Stage one
1.1 Determine the framing of the target
1.2 Take 2 hours 30 minutes of HA data on pane 1
1.3 Take 2 hours 30 minutes of HA data on pane 2
1.4 Combine the two HA panes into a single image
1.5 Produce a stretched version of the HA mosaic   Stage two
2.1 Take 2 hours 30 minutes of OIII data on pane 1
2.2 Take 2 hours 30 minutes of OIII data on pane 2
2.3 Combine the two OIII panes into a single image
2.4 Produce a stretched version of the OIII mosaic
2.5 Create a bi-colour image from the HA and OIII mosaics   Stage three
3.1 Take 2 hours 30 minutes of SII data on pane 1
3.2 Take 2 hours 30 minutes of SII data on pane 2
3.3 Combine the two SII panes into a single image
3.4 Produce a stretched version of the SII mosaic   Stage four
4.1 Take 30 minutes of RGB data for the star colour
Create two final images from the HA,OIII and SII mosaics:
4.2 One in Hubble palette - SHO
4.3 One in CFHT Palette - HOS   Bonus Goal:
Stage five
5.1 Take additional 2 hours 30 minutes of HA data on pane 1
5.2 Take additional 2 hours 30 minutes of HA data on pane 2
5.3 Combine with data from stage one
5.4 Produce a stretched version of the HA mosaic   Stage six
6.1 Take additional 2 hours 30 minutes of OIII data on pane 1
6.2 Take additional 2 hours 30 minutes of OIII data on pane 2
6.3 Combine with data from stage two
6.4 Produce a stretched version of the OIII mosaic   Stage seven
7.1 Take additional 2 hours 30 minutes of SII data on pane 1
7.2 Take additional 2 hours 30 minutes of SII data on pane 2
7.3 Combine with data from stage three
7.4 Produce a stretched version of the SII mosaic   Stage eight
Create two final images from the HA,OIII and SII mosaics:
8.1 One in Hubble palette - SHO
8.2 One in CFHT Palette - HOS   Thanks for reading

Robp

Robp

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