DSO 遺照集 -- NGC7000
Re: DSO 遺照集 -- M2 with planetary cam
92. M2
Taken with DIY 30cm F4 Newtonian + 462C @YL last night @1200mm F4
98x10s, unguided with Vixen AXJ mount
Stacked in DSS with darks calibrated only
Processed in PI and PS
Very poor seeing condition
Taken with DIY 30cm F4 Newtonian + 462C @YL last night @1200mm F4
98x10s, unguided with Vixen AXJ mount
Stacked in DSS with darks calibrated only
Processed in PI and PS
Very poor seeing condition
Re: DSO 遺照集 -- M72 with planetary cam
92. M72
Taken with DIY 30cm F4 Newtonian + 462C @YL last night @1200mm F4
69x10s, unguided with Vixen AXJ mount (31 frames rejected to stack up by DSS)
Stacked in DSS with darks calibrated only
Processed in PI and PS
When it was taken, it was very low above west horizon, no more than 30 degrees. Moreover, very very poor seeing condition. So, no quality, just a record I had taken it in HK.
Taken with DIY 30cm F4 Newtonian + 462C @YL last night @1200mm F4
69x10s, unguided with Vixen AXJ mount (31 frames rejected to stack up by DSS)
Stacked in DSS with darks calibrated only
Processed in PI and PS
When it was taken, it was very low above west horizon, no more than 30 degrees. Moreover, very very poor seeing condition. So, no quality, just a record I had taken it in HK.
Re: DSO 遺照集 -- NGC253 with planetary cam
93. NGC253
Taken with DIY 6"F5 Newtonian + 462C @YL at 20201116 @750mm F5
100x20s, unguided with Vixen AXJ mount
Stacked in DSS with darks calibrated only
Processed in PI and PS
When it was taken, it was very low above west horizon, no more than 30 degrees. Moreover, very poor seeing condition, low transparency and much LED light pollution at my site. So, no quality, just a record I had taken it in HK.
Taken with DIY 6"F5 Newtonian + 462C @YL at 20201116 @750mm F5
100x20s, unguided with Vixen AXJ mount
Stacked in DSS with darks calibrated only
Processed in PI and PS
When it was taken, it was very low above west horizon, no more than 30 degrees. Moreover, very poor seeing condition, low transparency and much LED light pollution at my site. So, no quality, just a record I had taken it in HK.
Re: DSO 遺照集 -- M1 with planetary cam
94. M1
Conbine 2 sets of data taken at 2 different nights. First set was taken on Nov 16th (FWHM > 6" measured by DSS) and another on Nov 18th (4" < FWHM < 5.5") .
Taken with DIY 6"F5 Newtonian + IR blocking filter + 462C @YL at 20201116 @750mm F5
100 x 20s + 100 x 20s, unguided with Vixen AXJ mount
Stacked in DSS with darks calibrated only
Conbine 2 sets of data taken at 2 different nights. First set was taken on Nov 16th (FWHM > 6" measured by DSS) and another on Nov 18th (4" < FWHM < 5.5") .
Taken with DIY 6"F5 Newtonian + IR blocking filter + 462C @YL at 20201116 @750mm F5
100 x 20s + 100 x 20s, unguided with Vixen AXJ mount
Stacked in DSS with darks calibrated only
Re: DSO 遺照集 -- M15 taken with cooled CCD
95. M15
Taken with Vixen VSD100F3.8 astrograph + Atik 383L mono cooled CCD in HK in 2016 and 2017 @380mm F3.8
Autoguided with Vixen SX2 mount
Stacked in DSS with dark and bias calibrated only
Processed in PI and PS
1. RGB: R=G=B=2x300s taken in 2016
2. LRGB: L=5x360s taken in 2016 + 9x360s taken in 2017, R=G=B=2x300s taken in 2016
Taken with Vixen VSD100F3.8 astrograph + Atik 383L mono cooled CCD in HK in 2016 and 2017 @380mm F3.8
Autoguided with Vixen SX2 mount
Stacked in DSS with dark and bias calibrated only
Processed in PI and PS
1. RGB: R=G=B=2x300s taken in 2016
2. LRGB: L=5x360s taken in 2016 + 9x360s taken in 2017, R=G=B=2x300s taken in 2016
Re: DSO 遺照集 -- M27 (8300 MM + 100Da)
96. M27
Try to see again what the result will come out by combining the L-channel data taken with cooled mono CCD and color date taken with DSLR.
L-channel: taken with Atik 383L mono CCD @TMS with Vixen SD103S + HD reducer kit @624mm F6.1
Color data: taken with 100Da + Vixen R200SS + corrector PH + LPS @PTC @760mm F3.8
Try to see again what the result will come out by combining the L-channel data taken with cooled mono CCD and color date taken with DSLR.
L-channel: taken with Atik 383L mono CCD @TMS with Vixen SD103S + HD reducer kit @624mm F6.1
Color data: taken with 100Da + Vixen R200SS + corrector PH + LPS @PTC @760mm F3.8
Re: DSO 遺照集 -- a stack of M1
A new stacked image of M1
A try to stack two processed images of M1 taken with two different setups. Though no gain on the M1 object, the noise level seemed to be reduced by a little after stacking.
1. Taken with VC200L + reducer + LPS + 100Da @PTC @1280mm F6.4
2. Taken with DIY 30cm F4 Newtonian + 462MC in YL @1200mm F4
A try to stack two processed images of M1 taken with two different setups. Though no gain on the M1 object, the noise level seemed to be reduced by a little after stacking.
1. Taken with VC200L + reducer + LPS + 100Da @PTC @1280mm F6.4
2. Taken with DIY 30cm F4 Newtonian + 462MC in YL @1200mm F4
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