Astrophotography Japan / Super Wide-field DSO Imaging (Episode 11)
I imaged the entire Orion constellation and more, capturing 45-degrees of sky including over a dozen nebulae using the Samyang 14mm F2.8 lens on Christmas Day. There are lessons to be learned doing extreme wide-field imaging from this Bortle class 7+ city environment. Challenges, limitations and recommendations for use of the Samyang 14mm F2.8 lens are provided. A few seldom photographed (obscure?) nebulae were also identified and further imaged with the Askar FMA135 astrograph scope covering about 4.5-degrees of sky. Video of Japanese New Year traditions are shown at the end.
Contents:
01:18. Accessory configurations used with the Samyang 14mm Lens
04:55. Autumn images and Joro spiders and weather forecast
06:55. Polar alignment discussion
09:16. Surprisingly inaccurate All Sky Polar Alignment data
10:06. Field-of-View and resolution calculations
12:05. Samyang 14mm lens attractive features
12:47. Testing star images at various F-stop values; evaluating the lens
15:18. Final set-up of the imaging equipment
17:00. Raw image (unprocessed) data
18:10. Final image (processed) captured with the Samyang 14mm lens at F/5.6
18:34. Annotated image showing 12+ nebulae
19:21. Researching 3 obscure nebulae in the Orion constellation
22:16. Lambda Orionis nebulae
23:18. Summary & Conclusions
27:04. Final Look at all three wide-field images
28:35. Japanese New Year Experience