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Cederblad 51 (the two blueish areas) is a reflection nebula in the constellation of Orion. It is part of Sharpless 2-264, which is sometimes referred to as ‘Orion’s Head’.
Imaging telescope: Takahashi FSQ130ED
Imaging camera: FLI ML16200
Mount: Takahashi EM 400 Temma 2M
​Guiding telescope: Takahashi FS60CB
Guiding camera: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Capture Software: Sequence Generator Pro, PHD 2
Processing Software: Astro Pixel Processor, PixInsight, Topaz DeNoise, Photoshop
Filters (50mm): Astrodon Ha (3nm)
Accessories: SeleTEK2 controlling Robofocus Focuser, ATIK EFW3
Original Image (Crop): 2700 x 2400
Dates: 6th – 23rd Feb 2022
Frames:
Astrodon Ha 60 x 10′
Astrodon RGB 3 x 40 x 3′
Total integration = 16 hours