Hemisphere:  Northern  ·  Constellation: Orion (Ori)  ·  Contains:  Sh2-261
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Lower's nebula (Sh2-261) in Hα-SII/OIII/OIII+rgb, 



    
        

            Jose Carballada
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Lower's nebula (Sh2-261) in Hα-SII/OIII/OIII+rgb

Getting plate-solving status, please wait...
Lower's nebula (Sh2-261) in Hα-SII/OIII/OIII+rgb, 



    
        

            Jose Carballada
Powered byPixInsight

Lower's nebula (Sh2-261) in Hα-SII/OIII/OIII+rgb

Imaging telescopes or lenses: Altair Astro RC250-TT 10" RC Truss Tube  ·  Teleskop Service TS Photoline 107mm f/6.5 Super-Apo

Imaging cameras: ZWO ASI183MM-Cool  ·  ZWO ASI1600MM-Cool

Mounts: Skywatcher EQ6R Pro  ·  Mesu 200 Mk2

Guiding telescopes or lenses: Celestron OAG Deluxe  ·  Teleskop Service TSOAG9 Off-Axis Guider

Guiding cameras: ZWO ASI290 Mini  ·  ZWO ASI174 Mini

Focal reducers: Riccardi Reducer/Flattener 0.75x  ·  Telescope-Service TS 2" Flattener

Software: Pleiades Astrophoto PixInsight  ·  Seqence Generator Pro

Filters: Astrodon HA 36mm - 5nm  ·  Astrodon O-III 36mm - 5nm  ·  Astrodon S-II 36mm - 5nm  ·  Astrodon R Gen.2 E-series 36mm  ·  Astrodon G Gen.2 E-series 36mm  ·  Astrodon B Gen.2 E-series 36mm  ·  Astrodon L Gen.2 E-series 36mm

Accessory: ZWO EFW  ·  Pegasus Astro Falcon Rotator  ·  Pegasus Astro Ultimate Powerbox v2  ·  Astrolink 4.0 mini  ·  MoonLite NiteCrawler WR30  ·  TALON6 R.O.R  ·  MoonLite CSL 2.5" Focuser with High Res Stepper Motor


Dates:Dec. 17, 2020Jan. 6, 2021Jan. 18, 2021Jan. 27, 2021Feb. 10, 2021Feb. 11, 2021

Frames:
Astrodon B Gen.2 E-series 36mm: 140x30" (1h 10') (gain: 75.00) -20C bin 1x1
Astrodon G Gen.2 E-series 36mm: 140x30" (1h 10') (gain: 75.00) -20C bin 1x1
Astrodon HA 36mm - 5nm: 240x600" (40h) (gain: 200.00) -20C bin 1x1
Astrodon O-III 36mm - 5nm: 107x600" (17h 50') (gain: 111.00) -15C bin 1x1
Astrodon R Gen.2 E-series 36mm: 140x30" (1h 10') (gain: 75.00) -20C bin 1x1
Astrodon S-II 36mm - 5nm: 107x600" (17h 50') (gain: 111.00) -15C bin 1x1

Integration: 79h 10'

Avg. Moon age: 16.91 days

Avg. Moon phase: 31.21%


Astrometry.net job: 4352477

RA center: 6h 8' 57"

DEC center: +15° 45' 27"

Pixel scale: 1.007 arcsec/pixel

Orientation: 0.172 degrees

Field radius: 0.408 degrees


Resolution: 2328x1760

Locations: AAS Montsec, Àger, Lleida, Spain

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

Another nice object from the amazing Sharpless catalog.

Close to 80 hours of integration time and really surprised by the blue bubble that appears in the middle (not the bright blue triangle, the big blue subtle bubble on top of that) .

As usual on my latest pictures, I used this "natural" palette that I really like so much.

The process was long and hard and the acquisition also due to the weather in my observatory's region.

This object was never something prioritari on my desk but I am really happy with the results, even with the hard work to process all this data.

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