AP#69 : IC 4592
Name: The "Blue Horsehead"
Constellation:Scorpio
Instrument:
Image 1: Redcat51 and a modified Nikon D3300.
Image 2: Zenithstar 61 and ASI 2600 MC (gain 100 -20C)
Exposure time:
Image 1: A stack of 16 five-minute exposures at ISO 800.
Image 2: A stack of 40 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
This object is a blue reflection nebula that is near the star Beta Scorpii. Its shape is that of a horse's head but it is "upside down" for northern hemisphere observers. The image is "flipped", with south being at the top and west being on the left, in this image to show the orientation of the horse's head. The star, Nu Scorpii, serves as the horse's eye.
This image was taken with a zenithstar 61 and ASI 2600 MC astro camera. In this instace, the image is in the correct orientation but rotated -45 degrees so it could be framed in the camera properly.
