Tak Sky-90的深空照, 大师级

大师Steve Cannistra设备照



M42

Date日期:  December 15 and December 17, 2004.
Scope拍摄主镜:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, on a Losmandy G11赤道仪 mount.
Autoguider导星:  STV with e-finder.
Camera拍摄CCD:  SXV-H9.
Filters滤镜:  Ha (13nm bandpass), L, R, G, B type II filter set, all from Astronomik.
Exposures曝光 (all unbinned):  December 15 (the right hand side of the mosaic):  22 x 4' luminance; 20 x 30" luminance; 6 x 4' each R, G, B; 20 x 30" each R, G, B;  6 x 5' Ha; 20 x 30" Ha.  December 17 (the left hand side of the mosaic):  20 x 4' luminance; 6 x 4' each R and G, 8 x 4' B.  Total exposure time about 6.5 hours.



Date日期:  November 23 and October 30, 2003.
Scope拍摄主镜:  Takahashi Sky 90 at f4.5 with 平场减焦镜field flattener/focal reducer, piggybacked on 导星镜LX90 (which is mounted on a Meade Superwedge).
Autoguider导星:  STV with e-finder.
Camera单反相机:  Canon 10D.
Filter滤镜:  IDAS LPS.
Exposures曝光参数:  12 x 8' (November 23, 2003); 5 x 15"; 5 x 50 " (October 30, 2003), all at ISO 800.  Total exposure time approximately 100 minutes.总曝光时间100分钟.

Conditions天气:  November 23: Temperature 34 degrees F34华氏度; average transparency一般能见度; average seeing一般视宁度; light winds微风; October 30: Temperature 38 degrees F; below average transparency; average seeing; very breezy.

NGC 7000

1500X1000分辨率


Dates:  Taken on two consecutive nights, 6/19/05 and 6/20/05.
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, on the G11 Losmandy Mount.
Autoguider:  SBIG STV with e-finder.
Camera:  Maxcam CM10.
Filter:  AstroDon Ha filter (6 nm bandpass).
Exposures (unbinned):  Lower half:  20 x 10' each.  Upper half:  16 x 10' each.  Total exposure 6 hours.

M31 仙女座星系
1700X1000分辨率



Date:  November 15, 2003
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, piggybacked on LX90 (which is mounted on a Meade Superwedge).
Autoguider:  STV with e-finder.
Camera:  Canon 10D.
Filter:  IDAS LPS.
Exposures:  12 x 5' at ISO 800.
Conditions天气条件:  Temperature 29 degrees F29华氏度; average transparency一般能见度; average seeing一般视宁度; 有阵风occassional wind (3 shots out of 15 had slightly oblong stars and were not used 拍摄15张，3张作废).

The Western Veil面纱星云 (NGC 6960)

1300X1000


HaHaR:G:B)- exposure time for Ha was 60' as previously described (binned 1 x 1).  Exposure times for R, G, B were 18' each (binned 2 x 2).
Date for color data:  June 20, 2004
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, on the G11 Losmandy Mount.
Autoguider:  SBIG STV with e-finder.
Camera:  SXV-H9
Filter:  Astronomik RGB type II filter set.
Exposures:  6 x 3' each color filter, binned 2 x 2.
Conditions:  Temperature 50 degrees F; above average transparency; below average seeing; breezy.

NGC 7023 (Iris Nebula)



Date:  October 5, 2004
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, on the G11 Losmandy Mount.
Autoguider:  SBIG STV with e-finder.
Camera:  SXV-H9
Filter:  Astronomik Type II Clear, R, G, B filter set.
Exposures:  LRGB.  17 x 5' for Clear filter (luminance); 5 x 4' each for R and G (unbinned); 8 x 4' each B (unbinned).
Conditions:  Temperature 36 degrees F; above average transparency; above average seeing; calm; a glorious night.

M81 M82



Date:  December 7 and 11, 2004 (for M81 and M82 luminance, respectively).   January 10, 2005 (widefield luminance, RGB, and Ha data).
Scope:  January 10, 2005:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, on the G11 Losmandy Mount.  The December 7 and 11 luminance images were taken remotely using a Takahashi Epsilon 250mm scope at New Mexico Skies (details found at M81 and M82, respectively).
Autoguider:  SBIG STV with e-finder.
Camera:  SXV-H9
Filter:  Astronomik Ha filter (13 nm bandpass); Type II R, G, B, plus clear filter set.
Exposures:  LHaR:G:B).  205' for Luminance (includes all luminance data from 12/7/04, 12/11/04, and 1/10/05); 30' for Ha; 20' each for R, G, and B, all unbinned.  Total exposure time about 5 hours.
Conditions:  (January 10, 2005) Temperature 36 degrees F; average transparency; average seeing; a bit breezy.

Date:  October 1, 2004
Scope:  Takahashi Sky 90 at f9 with the Extender-Q focal extender, on the G11 Losmandy Mount.
Autoguider:  SBIG STV with e-finder.
Camera:  SXV-H9
Filter:  Astronomik Ha filter (13 nm bandpass); Astronomik RGB type II filter set.
Exposures:  Hydrogen alpha- 1 x 0.007" exposure.  (I took 40 sequential exposures of 0.007" each through the Ha filter and chose the best for subsequent processing).
Conditions:  Temperature 52 degrees F; poor transparency; good seeing as fog descended into region, calm.

M36



Date:  February 27, 2005
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, on the G11 Losmandy Mount.  I made a circular rim out of PVC tubing which fitted over the dew shield of the Sky90 and permitted placement of an elastic band to form an "X".  This created the star spikes shown above for the brighter stars.  A photograph of this device is shown here (this could also be accomplished with kite string or fishing line).
Autoguider:  SBIG STV with e-finder.
Camera:  SXV-H9
Filter:  Astronomik Type II R, G, B, plus clear filter set.
Exposures:  L:R:G:B.  5 x 3' for Luminance (clear filter); R, G, and B (4 x 3' each), all unbinned.
Conditions:  Temperature 23 degrees F; below average transparency; below average seeing; a little breezy; high, thin clouds passing through.

The Cone Nebula NGC 2264



Date:  1/16/06.
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, on the G11 Losmandy Mount.
Autoguider:  SBIG STV with e-finder.
Camera:  Maxcam CM10.  The image scale of this set up is 3.46"/pixel, with a FOV of approximately 1.4 x 2 degrees.
Filter:  Astronomiks Ha filter (6 nm bandpass).
Exposures:  24 x 10' each.  Total exposure 4 hours.
Conditions:  Temperature 20 degrees F, average transparency; average seeing; a few clouds; intermittent breeze; waning gibbous moon

马头星云




Date:  February 7, 2004.
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, piggybacked on LX90 (which is mounted on a Meade Superwedge).
Autoguider:  STV with e-finder.
Camera:  SXV-H9.
Filter:  Hydrogen Alpha, Astronomik.
Exposures:  19 x 5'.
Conditions:  Temperature 23 degrees F; below average transparency; average seeing; breezy; partly cloudy.  The evening turned mostly cloudy and windy by 11 PM, so I packed it up (I had hoped to shoot the Cone Nebula as well).

NGC 1333


Date:  January 31, 2005
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, on the G11 Losmandy Mount.
Autoguider:  SBIG STV with e-finder.
Camera:  SXV-H9
Filter:  Astronomik Type II Clear, R, G, B filter set.
Exposures:  LRGB.  19 x 5' for Clear filter (luminance); 8 x 5' for R; 4 x 5' for G; 6 x 5' for B (all unbinned).
Conditions:  Temperature 12 degrees F; above average transparency; average seeing; calm.

The Helix Nebula 螺旋星云(NGC 7293)



Date:  September 2, 2004
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, on the G11 Losmandy Mount.
Autoguider:  SBIG STV with e-finder.
Camera:  SXV-H9
Filter:  Astronomik Ha filter (13 nm bandpass).
Exposures:  14 x 5' each, binned 1 x 1, 70 minutes total.
Conditions:  Temperature 55 degrees F; average transparency; average seeing; calm.

七仙女M45



Date:  November 22, 2003
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, piggybacked on LX90 (which is mounted on a Meade Superwedge).
Autoguider:  STV with e-finder.
Camera:  Canon 10D.
Filter:  IDAS LPS.
Exposures:  12 x 5' at ISO 800.
Conditions:  Temperature 35 degrees F; below average transparency; average seeing; very dewy; calm.

Lower's Nebula in Orion (Sh2-261)


Date:  February 23, 2005
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, on the G11 Losmandy Mount.
Autoguider:  SBIG STV with e-finder.
Camera:  SXV-H9
Filter:  Astronomik Ha filter (13 nm bandpass).
Exposures:  36 x 5' each, binned 1 x 1, 3 hours total.
Conditions:  Temperature 23 degrees F; average transparency; average seeing; intermittent mild breeze; strong moonlight.

Elephant Trunk Nebula (Van den Berg 142)



Date:  May 29, 2004 (Ha image); June 18, 2004 (RGB image)
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, on the G11 Losmandy Mount.
Autoguider:  STV with e-finder.
Camera:  SXV-H9.
Filters:  Astronomik Ha filter (13 nm bandpass).
Exposures:  HaHaR:G:B).  Ha image: 18 x 5' each, unbinned.  RGB image:  5 x 5' each channel (25 minutes per channel), unbinned.  Total exposure 165 minutes.
Conditions:  May 29:  Temperature 55 degrees F; above average transparency; above average seeing; intermittent breeze

NGC 281 (Pacman Nebula)



Date:  September 10, 2004
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, on the G11 Losmandy Mount.
Autoguider:  SBIG STV with e-finder.
Camera:  SXV-H9
Filter:  Astronomik Ha filter (13 nm bandpass); Type II R, G, B filter set.
Exposures:  HaHaR:G:B).  20 x 5' for Ha (100 minutes total, unbinned); 5 x 4' each for R, G, and B (20 minutes total for each color), all unbinned.
Conditions:  Temperature 52 degrees F; above average transparency; below average seeing as front was passing through; calm.
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Markarian's Chain (NGC 4374)马卡良星系群




Date:  December 26, 2003
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, piggybacked on LX90 (which is mounted on a Meade Superwedge).
Autoguider:  STV with e-finder.
Camera:  Canon 10D.
Filter:  IDAS LPS.
Exposures:  16 x 4' at ISO 1600.
Conditions:  Temperature 30 degrees F; average transparency; average seeing; dry; somewhat breezy (I needed to exclude about 20% of shots due to the wind).

The Rosette Nebula (NGC 2237-2239)


Date:  November 22, 2003
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, piggybacked on LX90 (which is mounted on a Meade Superwedge).
Autoguider:  STV with e-finder.
Camera:  Canon 10D.
Filter:  IDAS LPS.
Exposures:  16 x 5' at ISO 1600.
Conditions:  Temperature 35 degrees F; below average transparency; average seeing; very dewy; calm.

一流的萤石镜，超一流的效果