Dark Nebula LDN881

19 Ottobre 2020 Stars and Nebulae

Splendido soggetto  denominato numero 881 nel Catalogo delle Nebulose Oscure di Lynds. (https://it.wikipedia.org/wiki/Cataloghi_di_Lynds)

Una nebulosa oscura o nebulosa molecolare è una grande nube contenente in gran maggioranza gas (idrogeno ed elio) ed una frazione (circa 1% in massa) di polvere, responsabile dell’aspetto della nube (Wiki).

Techincal details:

• Imaging telescopes or lenses:Teleskop Service TS Photoline 107mm f/6.5 Super-Apo , Altair Astro RC250-TT 10″ RC Truss Tube
• 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 ASI174 Mini , ZWO ASI290 Mini
• Focal reducers:Riccardi Reducer/Flattener 0.75x , Telescope-Service TS 2″ Flattener
• Software:Pleiades Astrophoto PixInsight , Seqence Generator Pro
• Filters: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 HA 36mm – 5nm , Astrodon L Gen.2 E-series 36mm
• Accessory:ZWO EFW , MoonLite NiteCrawler WR30 , TALON6 R.O.R , MoonLite CSL 2.5″ Focuser with High Res Stepper Motor
• Dates:July 21, 2020 , July 22, 2020 , July 25, 2020 , July 26, 2020 , July 28, 2020 , July 29, 2020

Frames:

• Astrodon B Gen.2 E-series 36mm: 90×30″ (gain: 75.00) -15C bin 1×1
• Astrodon G Gen.2 E-series 36mm: 90×30″ (gain: 75.00) -15C bin 1×1
• Astrodon HA 36mm – 5nm: 205×600″ (gain: 200.00) -15C bin 1×1
• Astrodon O-III 36mm – 5nm: 110×600″ (gain: 183.00) -15C bin 1×1
• Astrodon R Gen.2 E-series 36mm: 90×30″ (gain: 75.00) -15C bin 1×1
• Astrodon S-II 36mm – 5nm: 111×600″ (gain: 183.00) -15C bin 1×1

Integration: 73.2 hours

Locations: AAS Montsec, Àger, Lleida, Spain

Data source: Own remote observatory

Author: Jose Carballada