Friday, 14 January 2022

Rosette Nebula

 An 85% waxing gibbous moon phase is certainly a distraction for astrophotographers looking for faint fuzzies. But what can we do (launch a virgin rocket at it).. Thank goodness for the Ha filter, Because of the brightness of the sky background I reduced the exposure time to two minute subs and captured 4 hours worth of data. Imaging with the incredible ZWO ASI 2600MM and the 36mm filter wheel. I invested  also in a set of Optolong narrowband filters. I was incredibly impressed with the L- Enhance and it's ability to keep halo's and star sizes to a minimum. So for me it was a no brainer to add these to the arsenal. Saying that their LRGB filter set were new and untested at the time of purchase so I opted for the ZWO filter set. I am happy with them so far. But as I said the Ha filter was deployed last night and with a image stretch and dark dust enhancement I have a really clean image. Desperate for for some Oiii & Sii now.

Right so update alert last night was a clear night so had the opportunity to shoot 2 hours each on Oiii & Sii.

Processed on my new laptop and wow it is fast. 

Registered aligned & stacked in Deep Sky Stacker.

Starnet++

Processed in photoshop with

HSO colour mapped & selective colour

Levels & Curves

Photokemi astro tools Space dust & Dark details medium

Topaz denoise.



Ha

Oiii

Sii

Photo Details

  • Total Exposure: 9 Hours, 0 Minutes 120 x 2 Mins Ha , 30 x 3Mins Oiii, 30 x 3Mins Sii 
  • Image Acquisition: ZWO ASIair Pro
  • Camera Settings:  ZWO ASI2600mm pro Gain 100, 0°C
  • Accessories: ZWO 7 position Filter wheel
    •                Optolong narrowand filters 
    •                ZWO broadband filters
    •                ZWO EAF
  • Calibration Frames: No Calibration
  • Stacking and Processing: DeepSkyStacker, Adobe Photoshop 2020, 
  • Size: 2.26 x 1.38 deg 
  • Pixel Scale: 1.41 arcsec/pixel

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Rosette Nebula

 An 85% waxing gibbous moon phase is certainly a distraction for astrophotographers looking for faint fuzzies. But what can we do (launch a ...