Hemisphere:  Northern  ·  Constellation: Leo (Leo)  ·  Contains:  32 alf Leo  ·  IC591  ·  Regulus  ·  The star Regulus (αLeo)
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Regulus & Leo 1 Dwarf Galaxy, 


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Regulus & Leo 1 Dwarf Galaxy

Technical card

Imaging telescopes or lenses: Astrotech 92 Triplet AT92mm f/5.5

Imaging cameras: ZWO ASI071MC PRO CMOS OSC

Mounts: Orion Azeq Atlas pro

Guiding telescopes or lenses: ASTRO TECH AT66ED Guiding

Guiding cameras: Orion Starshoot Autoguider

Focal reducers: Astro Tech Field flattener

Software: PixInsight  ·  Stark Labs pHD guiding PHD2  ·  EQMOD, Stellarium, Stellarium Scope, PHD, Backyard EOS, Astro Tortilla Nebulosity 4

Filters: Zwo Filter Drawer  ·  Optolong UV-IR

Accessory: Thousand Oaks Dew Controller  ·  Pegasus Astro Dual Motor Focus Controller Cube focuser

Dates:Jan. 16, 2021

Frames:Optolong UV-IR: 115x60" (gain: 90.00) -10C

Integration: 1.9 hours

Darks: ~30

Flats: ~30

Bias: ~50

Avg. Moon age: 3.36 days

Avg. Moon phase: 12.24%

Bortle Dark-Sky Scale: 7.00

Mean SQM: 18.48

Astrometry.net job: 4161015

RA center: 10h 8' 35"

DEC center: +11° 59' 47"

Pixel scale: 0.969 arcsec/pixel

Orientation: -69.647 degrees

Field radius: 1.046 degrees

Resolution: 6315x4539

Locations: Home backyard red turning white zone Bortle 8, Gilbert, Az, United States

Data source: Backyard


At magnitude 1.35, Regulus is the brightest star in Leo. It lies 79 ly away.
To the left is a 11th mag. Elliptical Galaxy. It lies 815,000 ly from Earth.