NGC1491      detta anche"Impronta fossile"  è una nebulosa a emissione, visibile nella costellazione di Perseo.  

S21200sec   X8 Bin2

Ha1200sec   X17 Bin1

OIII1200sec X8 Bin2

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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
OAG Lodestar x2
Location : Casa Treviso 25 sett 2020

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