48x 12s ISO 1600 on M42

Finally, a brief moment of clear night sky. I’m hoping things will start to get better up to the summer. But anyway, this is my first stacked picture using the FRA400 telescope. No guiding, really crude alignment and super short exposures. But even so, I’m happy with the result. Looking forward to improving data gathering and processing techniques.

Author: Fernando Schuindt
License: CC BY 4.0
Camera: BCF-1 modified Canon T3i
Lens/Telescope: Askar FRA400 400mm f/5.6 quintuplet apochromat
Composition: 48x Light Frames 12” (9.6’ total) ISO 1600, 25x dark, 25x flat, 25x bias
Processing: Stacking with DeepSky Stacker, Photoshop Levels adjustments and Camera Raw Filter
Location Name: Aracaju - Sergipe, Brazil
Bortle Scale: 7
Location Aprox. Coordinates: 10°57’30.0”S 37°02’30.0”W
Timestamp (Local Time): 10-23-2022 from 00:54h to 01:16h
Timezone: UTC-3 (No daylight saving time)
Outdoor temp.: 28° C
Outdoor humidity: 73%
Theme: M42
Center (RA, hms): 05h 35m 47.375s
Center (Dec, dms): -05° 44’ 44.402”
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Other Gear: Meade LX85 GEM unguided (Two-star basic alignment)
Astrometry: https://nova.astrometry.net/user_images/6636562#annotated
Backup Images (On Google Photos): https://photos.app.goo.gl/YWpmThGFRFDU1hBt9

(Click to zoom)

Annotated: