AP#70 : RHO OphIuchi Region
Name: Rho Ophiuchi
Constellation:Coma Bernices
Instrument:
Image 1: Redcat mosaic and a modified Nikon D3300.
Image 2: Rokinon 85mm F1.4 lens stopped down to F4 and an ASI 2600 MC (gain 100 -20c)
Image 3: Redcat with ASI 2600 (gain 100 -20c)
Exposure time:
Image 1: Three panels, each with a stack of 16 five-minute exposures at ISO 800.
Image 2: A stack of 10 two-minute and 22 three-minute exposures.
Image 3: A stack of 10 two-minute and 29 three-minute exposures.
Star Chart from Michael Vlasov's Deep sky hunter star atlas available on line https://www.deepskywatch.com/deep-sky-hunter-atlas.html
The Rho Ophiuchi dust complex surrounds the Rho Ophiuchi star system and encompasses the bright star Antares. It covers a large area of the sky and requires a short focal length lens or involves creating a mosaic of several images with a medium focal length lens.
This image was taken with an 85mm lens and an ASI 2600 MC astro camera. It shows the Rho Ophiuchi complex as well as surrounding dark nebulae, the "Blue Horsehead" (AP69), and nebulosity surrounding stars at the head of scorpio.
This image of the central complex was taken by a Redcat 51 and ASI 2600MC.
