|
|
The "mouse-over" view
is with Baader filters.
|
Instrument |
Takahashi FSQ-106ED @
f/5.0 (530 mm F.L.) Captured at 2.1 arcsec/pixel. Shown at
8.49 arcsec/pixel. |
|
Mount |
Paramount MyT |
|
Camera |
SBIG STF-8300M Self
Guiding Package w/ mono ST-i, using AstroDon E-Series and Baader RGB filters. |
|
Exposure AstroDon |
|
RGB |
180 min. (6
x 10 min. each) binned 1x1 |
RGB
combine ratios are 1.00,
0.98, 0.81 |
|
Exposure Baader |
|
RGB |
189 min. (9
x 7 min. each) binned 1x1 |
RGB
combine ratios are 1.00,
1.05, 1.68 |
|
Software |
-
CCDSoft, PixInsight & Photoshop CS6.
-
eXcalibrator v5.0 for
(g:r)
white balancing, using 68 stars from the SDSS-DR9 database.
-
CCDStack for calibration,
normalization, data rejection, stacking
and creating the two RGB images.
-
PixInsight
processing includes gradient removal and non-linear stretching
with HistogramTransformation.
|
|
Comment |
The processing for the
two images is identical.
The AstroDon Serie-E filters are designed for use with "full frame"
sensors, like the one used in this test. The Baader filters are
designed for Interline sensors, such as the KAI-110002. As expected
the Baader filters required a strong correction in the blue channel
and the AstroDon filter correction was closer to 1,1,1.
The normal image train RGB calibration ratios, for the Baader filters, are 1.00, 1.20 &
1.42. For the AstroDon filters, the RGB calibration
numbers are 1.00, 0.92 & 0.90. The final eXcalibrator RGB ratios
can very from image to image. |
|
