Check out the new 2013 versions of the interstellar rose below. If you'd like to see some close-ups of the Rosette's core and the Bok Globules click here.
Rosette Nebula Information: Located an estimated 1,500 light-years from Earth in the constellation Monoceros, the Rosette Nebula is a spectacular region of ionized hydrogen excavated by the strong stellar winds from hot O- and B-type stars in the center of the young open cluster NGC 2244. It is a region of on-going star formation with an age of about three million years. Some good info about the Rosette is at SEDS here. This area is rich in hydrogen alpha wavelength emissions.
The image above consists of ~ 15 hours total exposure through a variety of cameras and telescopes. There are 75 * 5 minutes narrowband and 62 * 5 minutes of "One Shot Color (OSC)" data, along with 5 hours of data from 2010 and before. Narrowband data (30*5 min Ha, 30*5 min OIII, and 15*5 min SII) from SBIG ST-8300m monochrome camera, narrowband filters, and the Takahashi FSQ-85 telescope with reducer from the 2013 Davis Mountains trip. The skies were not entirely cooperative in 2013 so I'm short on the Sulfur exposures! The OSC was captured with the TOA 130 telescope with reducer and QHY8 "color" CCD camera. Everything rides on the AP 900GTO mount.
The image above uses the “Hubble Palette” to construct a color images from monochrome data obtained with narrowband filters and my SBIG 8300m camera: R= Sulfur, Blue = Oxygen, and Green = Hydrogen Alpha.
Image details: 6.25 hours total (30 Ha, 30 O3, 15 S2 frames of 5 minutes each) using SBIG ST-8300m monochrome camera, narrowband filters, and the Takahashi FSQ-85 telescope with reducer riding on the AP 900GTO mount from the 2013 Davis Mountains trip. The skies didn't allow me to get the S2 exposure I really wanted, so the red is a bit rough.
The image above mimics a "natural" color by blending the narrowband data as described at the bottom of my SBIG 8300 narrowband imaging page. Same base images as the Hubble Palette image above.
Many like the simplicity of a nice monochrome image. The image above shows only the H-alpha data from the 2013 Davis Mountains trip, 30 * 5 minutes = 2.5 hours exposure with other details as noted above.
See a larger version of the H-alpha picture on my Narrowband Imaging page.
By way of comparison, this image consists of data captured in 2010 and before. See below for older Rosette Nebula pictures.
Click on the image above for the HD-sized version. The above two images combine of over 5 hours of color exposure, plus a similar amount of H-alpha (Narrow band) stuff with the RGB version below.
64 frames, combining 22 x 4 minutes from the Canon EOS D20a DSLR and 42 x 5 minutes from HAS Site using the CCD: (Takahashi TOA 130 Telescope (a 5" APO refractor) with reducer, AP 900GTO mount, and QHY8 CCD Camera & normal workflow. )
Also: Rosette Nebula on my OSC Narrowband page
Combination of 22x4 minute exposures (88 minutes total exposure). Takahashi TOA 130 (a 5" APO refractor) and Canon EOS D20a. This is resized to be 50% of the original. My current image processing workflow is here. The images from this session feature 29 light frames median combined, along with 9 dark frames. On the darks, I did both a median combine and an average combine, and then averaged those together. Temperature ranged from ~51 degrees F at the start of imaging to 42 degrees when I was packing up and doing my last darks. 12/28-29/2005. The rest of the images from this night...
Stack of 5+ images. Equipment: Nikon D100 DSLR, Takahashi TOA 130 (see myTakahashi TOA 130 page) with Reduce, Losmandy G11 mount, SBIG STV autoguider using an ST80. 3/11-12/2005, NHAC Neal Site. This was a major image processing challenge due to weak red response in the DSLR.
Dick's Pix (Dick Locke's Picture & Image Page)