Cone Nebula in Monoceros
Christmas Tree Cluster

Cone Nebula

This photography was taken at San Antonio de Areco, Provincia de Buenos Aires, Argentina, in two sessions separated by almost one year: 35x5 minutes ISO 800 subframes the 1-6-2016 and 11-26-2016, summing up almost 3 hours of total integration time.
The used equipment setup: Newton GSO 200 F4 with GPU Comma Corrector, Canon 600D/T3i modified and refrigerated (sensor measured and regulated temperature 0°C), Astronomik CLS CCD filter, SkyWatcher NEQ6 mount, and homemade electronic focuser and anti-dew systems.

Technical data

Acquisition site San Antonio de Areco, Buenos Aires, Argentina
Acquisition date 1-6-2016
Instrument Newton GSO F4 200 with GPU coma corrector.
Mount Sky-Watcher NEQ6, managed by EQmod
Guide Off-Axis, with Lodestar camera
Camera Modified Canon 600D/T3i
No IR Filter (Full Spectrum mod, using Astronomik MC Clear)
Refrigerated (regulated temperature)
Camera sensor temperature 0°C (on-sensor measured and regulated)
Filter Astronomik Clip CLS CCD
Integration 35 x 5 minutes subframes at ISO 800
Total integration time: 2 hs, 55 min
Calibration 49 flats, 400 bias, 84 darks.
Resolution 1.1 arcsec/pixel
787 mm actual focal, 4.2 um x 4.2 um pixels
Native size 5202 x 3465 pixels
Cropped size 5086 x 3390 pixels
FOV 1°33’ x 1°2’
Image center coordinates RA: 06 h 41 min 10 sec
Dec: 9° 31' 42"
Rotation: 7°
Process PixInsight 1.8