Waid Observatory

Object: Sh2-101 - The Tulip Nebula
Date: Aug. 2022    Location: Davis Mountains west of Fort Davis, TX
Telescope: 10 in. RC   -   Camera: Apogee Alta F8300M   -  Mount: Paramount MX
Exposure: SII = 340 min., Ha = 380 min., OIII = 440 min. (Bin 1x1)  -  RGB for stars = 20 min. each (Bin 2x2)
Click on the image below to view at higher resolution.




Sh2-101 - The Tulip Nebula 1

Sh2-101, as designated in the Sharpless Catalog of HII regions, is also communally known as the Tulip Nebula.  This colorful nebula is located in the constellation Cygnus the Swan at an approximate distance of 6,000 light years from the Earth.  The microquasar Cygnus X-1 is located just outside the field of view of the image ubove.  It is an object of much scientific interest.  Cygnus X-1 is a source of intense X-Ray emission and is the site of one of the first suspected black holes.  The location of Cygnus X-1, in relation to the Tulip Nebula, may be viewed in this wide field image.

The image above is known as a mapped, or false, color image and was acquired using narrowband filters.  It was assembled using the standard Hubble Palette with SII mapped to red, Ha mapped to green and OIII mapped to blue.  The stars were overlaid with RGB data to give them a near true color appearance.  A Bi-Filtered near true color image of Sh2-101 may be viewed here.

1 https://en.wikipedia.org/wiki/Sh2-101

Copyright Donald P. Waid