AP#73 : The Prancing horse nebula
Name: The "Prancing horse" Nebula.
Constellation:Ophiuchus
Instrument:ASI 2600 MC (Gain 100 -20c) withan 85mm F1.4 lens stoped to F4.
Exposure time: A stack of 30 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
Angular size: 10 degrees X 10 degrees
This object is a collection of various dark nebula in Ophiuchus (B57/B60-7/ B77/B246/B259/B262/ B268-270). The shape is that of a horse that appears to be prancing. The rear of the horse is composed of the large dark nebula with the name of the "pipe nebula".
When stitched with the Rho Ophiuchi image #2 (see AP#70), we get the following mosaic.
