Hemisphere:  Northern  ·  Constellation: Auriga (Aur)  ·  Contains:  14 Aur  ·  16 Aur  ·  17 AR Aur  ·  18 Aur  ·  19 Aur  ·  AE Aur  ·  Flaming Star Nebula  ·  Flaming Star nebula  ·  IC 405  ·  IC405  ·  IC410  ·  NGC 1893  ·  NGC1893  ·  Sh2-229  ·  Sh2-230  ·  Sh2-236  ·  The star 14Aur  ·  The star 16Aur  ·  The star 19Aur  ·  VdB39
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Sharpless in Auriga - A 2 Panel Mosaic - From Flaming Star to Tadpoles, 



    
        

            G400
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Sharpless in Auriga - A 2 Panel Mosaic - From Flaming Star to Tadpoles

Technical card

Imaging telescopes or lenses: Takahashi FS60 CB

Imaging cameras: ZW Optical ZWO ASI 183 MM Pro

Mounts: Skywatcher EQ6-R Pro

Guiding telescopes or lenses: ZW Optical 30F4 MiniScope

Guiding cameras: ZW Optical ASI 120 Mini Mono

Focal reducers: Reducer f/4,3 for TAK FS-60C/BC/CSV

Software: BackyardEOS  ·  Nikita Misiura's Starnet  ·  APT  ·  PixInsight 1.8 Ripley PixInsight  ·  PHD2 Guiding

Filters: Baader Ha 1.25" 7nm

Accessory: QHYCCD PoleMaster  ·  ZW Optical EFW 8x1,25"


Dates:Feb. 20, 2021

Frames:Baader Ha 1.25" 7nm: 32x360" (gain: 111.00) -15C bin 1x1

Integration: 3.2 hours

Darks: ~12

Flats: ~50

Avg. Moon age: 8.02 days

Avg. Moon phase: 56.80%


Astrometry.net job: 4242396

RA center: 5h 18' 19"

DEC center: +33° 58' 55"

Pixel scale: 1.943 arcsec/pixel

Orientation: 34.597 degrees

Field radius: 2.261 degrees


Resolution: 6476x5338

Data source: Backyard

Description

Original (dont know where that one went after uploading the 1st revision)

The night was nowcasted more promising than it realized later on. Lots of high thin rolling clouds. Not the best conditions to create a two pane mosaic with both elements having a high match in properties. The second panel was due to neighboring obstacles limited in integration time and only has one hour. The first one with 2.2 hrs is of course less in noise levels. And due to the clouds brightness was very different. To that effect an ~50% illuminated Moon which was quite close to the targeted objects also contributed to differences in brightness.

1. Revision

Second run of the now more balanced and equalled single frames wrt historgram. Merged them via ICE and did not apply the automatic process (not sure that contributed to the difference) and now had a much more seamless result.

Comments

Revisions

  • Sharpless in Auriga - A 2 Panel Mosaic - From Flaming Star to Tadpoles, 



    
        

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    Original
  • Sharpless in Auriga - A 2 Panel Mosaic - From Flaming Star to Tadpoles, 



    
        

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    Q
  • Sharpless in Auriga - A 2 Panel Mosaic - From Flaming Star to Tadpoles, 



    
        

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    R
  • Final
    Sharpless in Auriga - A 2 Panel Mosaic - From Flaming Star to Tadpoles, 



    
        

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    S

Q

Description: Second run of the now more balanced and equalled single frames wrt historgram. Merged them via ICE and did not apply the automatic process (not sure that contributed to the difference) and now had a much more seamless result.

Uploaded: ...

R

Description: one ABE later ...

Uploaded: ...

Sky plot

Sky plot

Histogram

Sharpless in Auriga - A 2 Panel Mosaic - From Flaming Star to Tadpoles, 



    
        

            G400