Color vs. Mono Camera Match
SBIG ST-2000XCM color camera vs. the ST-2000XM mono w/filters

Meet The Contenders


Finished Examples

  Displayed here are the completed examples taken with the XCM and XM cameras using the images from the previous sections. In all cases the same processing techniques were performed, but additional processing was needed for some of the XCM images. Though further processing can be performed (again, it's a personal preference) you need to know when to quit to avoid an over processed or pastel look. No luminance data for a hybrid was added to the XCM image for the reason that not everyone owns both camera types to do so. I want to display the images based on their own capabilities alone so these examples are RGB or HaRGB. Full potential of the mono camera can be seen near the bottom of this page. Click on any image for a larger view.

Merope in M45 was a little more involved due to additional noise processing in the XCM example. But the XM version displayed more harsh halos due to the filters. The XCM had a more pleasing look with minimal halos.
The Bubble Nebula and M67 star cluster examples were the easier to process with almost the same techniques applied to each.
NGC 6992 was more involved due to the large differences in the OIII colors with the XCM requiring several processing steps to get the colors more accurate.
M1 Crab Nebula produced by the XCM needed the most processing to bring out the details. Compared to the M1 taken with the XM, it still lacks the finer resolution and also was very difficult to increase the star color saturation.


Merope in M45 taken with XCM
Exposure - 63x3 minutes
Merope in M45 taken with XM
Exposure - (R)20 X 3 (G) 20 X 3 (B) 20 X 3 minutes
Bubble Nebula taken with XCM
Exposure - Color - 17x10, Ha 10 x 15 minutes
Bubble Nebula taken with XM
Exposure - (R)6X10 (G) 6X10 (B) 6X10, Ha 10 x 15 minutes
M67 taken with XCM
Exposure - 60 x 3 minutes
M67 taken with XM
Exposure - (R)10 X 3 (G) 10 X 3 (B) 10 X 3 minutes
NGC 6992 Veil Nebula taken with XCM
Exposure - Color - 18x10, Ha - 9x15 minutes
NGC 6992 Veil Nebula taken with XM
Exposure - (R)6X10 (G) 6X10 (B) 6X10, Ha - 9x15 minutes
M1 Crab Nebula taken with XCM
Exposure - Color - 18x10, Ha - 12x15 minutes
M1 Crab Nebula taken with XM
Exposure - (R)6X10 (G)6X10 (B)6X10, Ha - 12x15 minutes


The XM camera unleashed!

  Below are images taken with the XM that show the mono cameras full performance potential utilizing a luminance channel as described in the 'Hybrid' section. Compared to the HaRGB counter parts listed above, these display better S/N as well as enhanced details especially with NGC 6992. As you can see the mono camera offers better performance level options when it comes to filter selection availability.

NGC 6992 in HaLRGB
Exposure - (L) 6X10 (R)6X10 (G) 6X10 (B) 6X10, Ha - 9x15 minutes
NGC 7635 in HaLRGB
Exposure - (L) 6X10 (R)6X10 (G) 6X10 (B) 6X10, Ha - 9x15 minutes

© 2008 Michael A. Siniscalchi