The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on, counterclockwise Intermediate spiral galaxy located 21 million light-years (6.4 megaparsecs)^[5] from Earth in the constellation Ursa Major. wiki

 

NOTA: Seeing non buono

 

 

L       900secX13  Bin1  
R       600secX6 Bin2
G       600secX6  Bin2
B       600secX6  Bin2  

 

>Set CCD Temp.-25°C

>Night Temp. 3°C

GM1000 HPS 10Micron Mount and Aries Tripod

Astrografo Ritchey–Chrétien GSO 10" Truss V3 

fl_2000mm f/8       
FOV 0°27'x 0°27'
resolving 0.76"pix
Moravian Instruments G2-4000 MARK II Monochrome CCD Camera :

    Sensor: Kodak KAI-4022 Monochrome CCD
    Resolution: 2056 x 2062 pixels
    Quantum Efficiency:  57% max
    Pixel Size: 7.4 x 7.4 µm
    Imaging Area: 15.2 x 15.3 mm
    Cooling: Two-stage Peltier up to -50°C

Baader Filters
Guide : OAG Lodestar x2

Location :   Alpi Friulane March 30 ,2025    -ITALY-