Hemisphere:  Northern  ·  Constellation: Leo (Leo)  ·  Contains:  IC 591  ·  The star Regulus (αLeo)
Leo 1 ( dwarf galaxy ), 


            Gianluca Belgrado
Leo 1 ( dwarf galaxy )
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Leo 1 ( dwarf galaxy ), 


            Gianluca Belgrado
Leo 1 ( dwarf galaxy )
Powered byPixInsight

Technical card

Imaging telescopes or lenses: SkyWatcher Newton 200 / 1000

Mounts: Skywatcher NEQ6 PRO Synscan

Guiding telescopes or lenses: Konus Vista 80/400

Guiding cameras: Canon EOS 700D

Software: DeepSkyStacker (DSS) 4.2.2 64 bit  ·  Photoshop cc 2020  ·  Pleiades Astrophoto Pisinsight LE

Accessory: Celestron Mpcc

Dates:March 18, 2018

Frames: 18x900" (4h 30') ISO100

Integration: 4h 30'

Avg. Moon age: 0.95 days

Avg. Moon phase: 1.01%

Bortle Dark-Sky Scale: 8.00

Basic astrometry details

Astrometry.net job: 3300834

RA center: 10h08m18s.10

DEC center: +12°1134

Pixel scale: 1.777 arcsec/pixel

Orientation: 359.574 degrees

Field radius: 0.619 degrees

Resolution: 2048x1447

Locations: Cortile di casa, Casarano, Lecce, Italy

Data source: Backyard


Leo I is a dwarf galaxy in the constellation Leo, about 820,000 light years from Earth

It was discovered in 1950 by Albert George Wilson on photographic plates taken through the Schmidt room at the Palomar Observatory. Leo I is located just 12 arc minutes from Regolo, the brightest star in the constellation. For this reason the galaxy is sometimes called Regolo's dwarf. Starlight makes the study of the galaxy difficult and was noticeable only in the 1990s. Photographed from my house, adding 18 poses from 15 minutes to 100 ISO, made with a Newton SW 200/1000 telescope and a Canon 700d reflex