Contains:IC 591, The star Regulus (αLeo)
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Leo 1 Dwarf Galaxy " PGC29488" and B-type star Regulus

Technical card

Imaging telescope or lens:Home made OC2226

Imaging camera:SBIG STL-11000M

Mount:GT11000 Paramount

Guiding telescope or lens:Home made OC2226

Guiding camera:SBIG STL-11000M

Software:PixInsight PinInsight 1.8home written C++


Accessories:RobofocusTechnical Innovations Dome 6'

Resolution: 1267x1075

Dates: Dec. 19, 2017

Frames: 69x180"

Integration: 3.5 hours

Avg. Moon age: 1.08 days

Avg. Moon phase: 1.32% job: 1961375

RA center: 152.100 degrees

DEC center: 12.309 degrees

Pixel scale: 3.375 arcsec/pixel

Orientation: 90.467 degrees

Field radius: 0.779 degrees

Locations: Sierra Chaparral Observatory, Solar Powered, Off The Grid, Single Owner, Home Made, Tulare County, CA, United States

Data source: Own remote observatory


The star Regulus , the heart of the Lion, and Leo I a dwarf galaxy are within one degree of each other. Close in the sky but Regulus is located about 75 light years away and Leo 1 is located more than 10,000 times further at about 800,000 light years away.

Regulus is the twenty-first brightest star in the night sky with an apparent magnitude of +1.35, a B type star with almost 4 solar masses. Regulus is part of a multiple star system, with a close companion star visible to the upper left.

Leo I is a dwarf spheroidal galaxy and thought to be one of the most distant of the Local Group of galaxies. The local group is dominated by our Milky Way Galaxy and M31.

There are a number of small and distant galaxies visible here as well. This is a crop from a larger image using Astrodon RGB filters (27)R + (22)G + (20)B all at 180 seconda using an 8" F/2.6 home made astrograph.

North is to the left.





Sky plot

Sky plot


Leo 1 Dwarf Galaxy " PGC29488"  and B-type star Regulus, 



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Unique or Unusal Deep Sky Targets