This is the full field of the 'southern' North America frames I shot the night of August 11.
This a combination of data from two telescopes mounted side-by-side on a CGE Pro: a Takahashi TOA 130 with 645 field flattener (f7.7) with an ASI2400mc-pro and Optolong L-Ultimate 3nm Ha/Oiii filter, and an Askar FRA600 with the 0.7x reducer (f3.85) with an SBIG 8300m and an 8nm Sii filter. Ambient temperatures started at 30 degrees Celsius, so for the first hour the cameras were set to -5 before being dropped to -10.

Capture details:
Takahashi/ASI2400mc - 64x300s (5h20m) [L-ultimate Ha/Oiii]
Askar/SBIG8300m - 48*300 (4h) [Sii 8nm]
Location: Cobble Hill, British Columbia (August 11, 2025)


For processing, I calibrated each data set with temp-matched calibration frames. I then split the debayered data from the ASI2400mc into R, G and B stacks to separate the Ha and Oiii. The B and G channels were combined to produce the master Oiii frame.

There's a big missmatch in the resolution between the two telescopes. It added to some challenges when processing, but I worked out a flow that simplifies things a bit by just stripping out the stars immediately and handling them separately.