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The photo below, is of the central portion of the IC1805, the "Heart" nebula complex in Cassiopeia,
containing the cluster Melotte 15 and the formations I've referred to as the "Dragon's Lair" at its core.
Melotte 15 contains several young (mean age 1.5 million years), bright "O" and "B" type stars which
helps to "light up" the interesting dust clouds. Judging by the estimated 7500 lyr distance, the two
"dragons" are on the order of 3-4 lyr in extent. The head of the upper member itself would easily
contain our solar system, including the Oort cloud, or at least the smaller Hills cloud.
Photo details:
The photos consist of NIR filtered exposures, and (with mouse over), Ha filtered exposures. Notice the
"nebula removal" the IR filter provides. The IR photo consists of 8 X 10min subexposures w/ the H9
through a TV X0.8 reducer/flattener and an Astronomik NIR filter (>750nm)on the ED80. The Ha
exposures were taken w/ the H9 through Astronomik 6nm Ha filter in the FLI wheel on the 10" SPX newt
at f/4.8. That photo consists of 22 X 7min subexposures. All subexposures were flat calibrated and
processed in MaximDL, PixInsight (deconvolution), and Photoshop CS2.
containing the cluster Melotte 15 and the formations I've referred to as the "Dragon's Lair" at its core.
Melotte 15 contains several young (mean age 1.5 million years), bright "O" and "B" type stars which
helps to "light up" the interesting dust clouds. Judging by the estimated 7500 lyr distance, the two
"dragons" are on the order of 3-4 lyr in extent. The head of the upper member itself would easily
contain our solar system, including the Oort cloud, or at least the smaller Hills cloud.
Photo details:
The photos consist of NIR filtered exposures, and (with mouse over), Ha filtered exposures. Notice the
"nebula removal" the IR filter provides. The IR photo consists of 8 X 10min subexposures w/ the H9
through a TV X0.8 reducer/flattener and an Astronomik NIR filter (>750nm)on the ED80. The Ha
exposures were taken w/ the H9 through Astronomik 6nm Ha filter in the FLI wheel on the 10" SPX newt
at f/4.8. That photo consists of 22 X 7min subexposures. All subexposures were flat calibrated and
processed in MaximDL, PixInsight (deconvolution), and Photoshop CS2.
Drag your mouse over this Photo
The following photo is of the "Bubble" nebula, NGC7635 (Sharpless 162) and the open cluster M52, both located in the constellation
Cassiopeia. The Bubble is located ~11Klyr away from us, while M52 is less than half of that distance. Both were discovered in the 18th
century; the nebula by Herschel, the cluster by Messier.
This photo is a combination of Lum, Ha, and RGB filtering combined as (LHa)(RHa)GB. The individual exposures consists of 30 X 4 min lum, 3 X
10 min Ha, 4 X 4 1/2 min each of Red & Blue, and 4 X 3 1/2 min Green using the H9 and TV X0.8 Rd/Fl on the ED80.
Cassiopeia. The Bubble is located ~11Klyr away from us, while M52 is less than half of that distance. Both were discovered in the 18th
century; the nebula by Herschel, the cluster by Messier.
This photo is a combination of Lum, Ha, and RGB filtering combined as (LHa)(RHa)GB. The individual exposures consists of 30 X 4 min lum, 3 X
10 min Ha, 4 X 4 1/2 min each of Red & Blue, and 4 X 3 1/2 min Green using the H9 and TV X0.8 Rd/Fl on the ED80.
The photo below is of the Sombrero galaxy, also known by the designations M104 or NGC4594. This
galaxy is located ~29MLyr away in Virgo. It may be part of the Virgo cluster (not definitively established).
This (10' X 7' FOV; 0.9"/pix) photo, consisting of 5hr of combined 5min lum exposures, was made using
the H-9 (binned 2x2) on the Mewlon at native focal length in 2009. The seeing was decent one night,
and poor the second night while exposures were taken, so detail is less than desired.
galaxy is located ~29MLyr away in Virgo. It may be part of the Virgo cluster (not definitively established).
This (10' X 7' FOV; 0.9"/pix) photo, consisting of 5hr of combined 5min lum exposures, was made using
the H-9 (binned 2x2) on the Mewlon at native focal length in 2009. The seeing was decent one night,
and poor the second night while exposures were taken, so detail is less than desired.
The photo below is of the unbarred sprial galaxy NGC2841. Also designated as GC1823, this spiral
galaxy is located about 50MLyr away in the constellation Ursa Major.
The photo consists of 30 X 5minute lum exposures (FOV of 10' X 7'; 0.9"/pix), made with the H9 (binned
2x2) on the Mewlon at native focal length in 2009.
galaxy is located about 50MLyr away in the constellation Ursa Major.
The photo consists of 30 X 5minute lum exposures (FOV of 10' X 7'; 0.9"/pix), made with the H9 (binned
2x2) on the Mewlon at native focal length in 2009.
The photo below is of the galaxy designated NGC7331, located ~49MLyr away in Pegasus. Also seen,
nearby are other more distant galaxies (NGC7335-7337, located ~X10 further) forming a grouping
referred to as the "Deer Lick Group".
The photo, made with the H9 (unbinned), through an MPCC, on the 250/f4.8 (1.1"/pix) newt in
September 2008 consists of ~ 3 1/2hrs of exposure. An approximately equal (total) amount of RGB
exposures were also made, and will be combined to yield a color image in the future.
nearby are other more distant galaxies (NGC7335-7337, located ~X10 further) forming a grouping
referred to as the "Deer Lick Group".
The photo, made with the H9 (unbinned), through an MPCC, on the 250/f4.8 (1.1"/pix) newt in
September 2008 consists of ~ 3 1/2hrs of exposure. An approximately equal (total) amount of RGB
exposures were also made, and will be combined to yield a color image in the future.
The following photo is of the planetary nebula NGC6888 (Sh-105), also called the "Cresent" nebula,
located about 5KLyr away in the constellation Cygnus. The nebula surrounds the Wolf-Rayet star,
WR136 (HD192163),and is caused by the high rate stellar winds eminating from the star.
The photo (~1deg X 0.75deg) was taken with the H9 plus TV FL/RD on the 80ED at f/6, in August 2009. It
consists of 2 1/2 hrs of 8min LUM exposures, 2 hrs of 15min Ha exposures, and 1hr each of RGB
exposures (8min R,G; 10min B), combined as (LRHa)(RHa,G,B) using MaximDL and Photoshop
located about 5KLyr away in the constellation Cygnus. The nebula surrounds the Wolf-Rayet star,
WR136 (HD192163),and is caused by the high rate stellar winds eminating from the star.
The photo (~1deg X 0.75deg) was taken with the H9 plus TV FL/RD on the 80ED at f/6, in August 2009. It
consists of 2 1/2 hrs of 8min LUM exposures, 2 hrs of 15min Ha exposures, and 1hr each of RGB
exposures (8min R,G; 10min B), combined as (LRHa)(RHa,G,B) using MaximDL and Photoshop
The following photo is of the reflection nebula, NGC1788, in Orion. It also is sometimes called the "Bat"
nebula. I've found little info concerning this neb. It's approximate distance is between 1Klyr and 2Klyr,
and is "lit" by the (obvious) stars TYC 4754-1474-1 (HD293815). There are (supposedly) several young
bright stars hiding behind the clouds. One might put their NIR filter in front of the camera and check
this out (see above photos).
The photo consists of ~2hrs of lum and 1/2 hr each of RGB taken with the H9 on the Mewlon 250 @
native FL
nebula. I've found little info concerning this neb. It's approximate distance is between 1Klyr and 2Klyr,
and is "lit" by the (obvious) stars TYC 4754-1474-1 (HD293815). There are (supposedly) several young
bright stars hiding behind the clouds. One might put their NIR filter in front of the camera and check
this out (see above photos).
The photo consists of ~2hrs of lum and 1/2 hr each of RGB taken with the H9 on the Mewlon 250 @
native FL
I have taken photos of several subjects, that are not yet represented on my site. I'm behind in processing these photos, and will add them,
or at least parts of them (maybe lum, or RGB) as I catch up. Here are some of the latest photos, or parts of them. Check back for more
updates.
or at least parts of them (maybe lum, or RGB) as I catch up. Here are some of the latest photos, or parts of them. Check back for more
updates.
This is a photo of the planetary nebula Minkowski 2-51, also designated as Pk 103+00.1, located in the
constellation Cephus. I've not found much info concerning it. If you having anything, send me an email
(see email page).
The photo consists of 90min of lum (6min exp), 60min each of red & blue (5min exp), 60min of green
(4min exp), and 60min of Ha (12min exp). All taken with the H9 on the Tak Mewlon 250.
constellation Cephus. I've not found much info concerning it. If you having anything, send me an email
(see email page).
The photo consists of 90min of lum (6min exp), 60min each of red & blue (5min exp), 60min of green
(4min exp), and 60min of Ha (12min exp). All taken with the H9 on the Tak Mewlon 250.
This is a photo of the planetary nebula NGC6781, located in the constellation Aquila. The nebula is
about 2 lyr across, and appears, to us to be about 2 arcmin across, thanks to its distance of ~950pc,
and is believed to be ~17Kyr in age (Mavromatakis 2001). Note the bluish white star at the center, the
remains of the nebs origin.
The photo consists of 35 lum exposures (8min, unbinned), 7 exposures each of red & blue (5min,
binned 2X2), 6 green exposures (4min, binned 2X2). All exposures taken with the H9 on the Tak Mewlon
250 at native focal length.
about 2 lyr across, and appears, to us to be about 2 arcmin across, thanks to its distance of ~950pc,
and is believed to be ~17Kyr in age (Mavromatakis 2001). Note the bluish white star at the center, the
remains of the nebs origin.
The photo consists of 35 lum exposures (8min, unbinned), 7 exposures each of red & blue (5min,
binned 2X2), 6 green exposures (4min, binned 2X2). All exposures taken with the H9 on the Tak Mewlon
250 at native focal length.
This is a photo of the planetary nebula Abell 82 (aka PK114-04.1), located in the constellation
Cassiopeia. The nebula appears, to us to be about 1.5 arcmin across; thanks to its low surface
brightness (vis mag ~ 14 or 15), requires an OIII filter, at a dark site for visual obervation. Not much info
found, for this neb, from a brief web search.
The photo consists of 12 exposures each of red, green, blue (6min, 5min, 6min; each binned 2X2), and
6 Ha exposures (15min; binned 2X2). All exposures taken with the H9 on the Tak Mewlon 250 at native
focal length.
Cassiopeia. The nebula appears, to us to be about 1.5 arcmin across; thanks to its low surface
brightness (vis mag ~ 14 or 15), requires an OIII filter, at a dark site for visual obervation. Not much info
found, for this neb, from a brief web search.
The photo consists of 12 exposures each of red, green, blue (6min, 5min, 6min; each binned 2X2), and
6 Ha exposures (15min; binned 2X2). All exposures taken with the H9 on the Tak Mewlon 250 at native
focal length.
