Tonight was clear, but the moon was coming up soon. I took the SV80ED out for a quick look. Orion was high in the sky. I used the 30mm at 18.6x for wide sweeps and to find things. Then I ramped up to 112x with the 5mm Vixen Lanthanum for a close look. If that was not close enough, I'd use the 2x barlow with the 5mm for 224x. Seeing was not great.
Rigel, which I have always found easy in a good refractor, was cleanly split but with the companion only visible sometimes at 224x. The brighter component danced about in the cooling air. Temps probably began at around 48F and dropped 5 degrees while I was observing.
From Rigel, I went up to the Trapezium. The F component blinked in and out, but E was buried in the seeing for me. I could not spot it, either at 112x or 224x. One could easily see the arms of M42 reaching out from the area.
Next up was Sigma Orionis, a multiple star system which is really a small cluster in the process of breaking up. Nicely framed at 112x.
From there, I moved north and found M78 at 18.6x. It's just a smudge of blue in my suburban sky. I tried to get a closer look with the 5mm but could not see it.
Next over to Sirius, a great sight in the SVED80. At 18.6x, I saw no false color at all. It was just a beautiful white star in a lovely field. From Sirius, I moved south to M41, which looked small and somewhat unimpressive in the wide field of the 30mm. So I moved down to the next bright star in Canis Major and used it to find NGC 2362. I always look for the Queen and Her Court, an open cluster of stars presided over by one particularly bright star complemented by several dimmer cluster members that shimmer and dance around her. It reminds me of my bride and our beautiful children (ok, we don't have quite that many). Of this cluster, the 30mm hardly revealed anything, and the 5mm blew up the picture too much. Better get out the 10mm Vixen Lanthanum, I figured, which yielded 56x and framed the cluster perfectly.
The cold by this time was biting my fingers. It was time to go in. I snapped an image of the scope sitting on the Vixen Polaris mount. The two go together perfectly.
January 14, 2012
December 15, 2011
M31, the Andromeda Galaxy, and Sixty-four Globular Clusters with the SV80ED (Nov. 30, 2011)
This image may be best observed by clicking on it, then right-clicking on the pop-up image and selecting "View Image." You should be able to read the labels and see each individual, marked cluster.
This image of a central portion of the Andromeda Galaxy is only a combined 36 minutes of exposure (9x4'). I was testing to see what kind of exposures I will eventually need to take a real image of this amazing galaxy, the nearest major galaxy to our Milky Way. After I calibrated and combined the images and began to stretch the histogram of the combined frame, I wondered if I might see some globular clusters around the galaxy. I know that amateurs with large scopes often hunt them down. Perhaps I could see a few, too?
A web search led me to Robert Gendler's amazing image of M31 in which he has labelled a bunch of globs. I compared my image with his and found quite a few matches. Going to the source of his labels, Paul W. Hodge's Atlas of the Andromeda Galaxy, I realized that I could see not just a few but very many. I have not labelled all of those that I found, actually. Some are too faint to see unless the image is blown up, and some are located near the center of the galaxy where Hodge's plates, or at least those found on the website, are too blurred or noisy to read. But I have labelled sixty-four, many more than I thought I would find.
Not bad for 36 minutes through an 80mm scope.
Telescope: Stellarvue SV80ED NHNG f/7 w/WO ff/fr 0.8 II (so effectively at f/5.6)
Camera and Exposure: SXVF-H9C, 9x4'
Filter: IDAS-LPS2
Guiding: Borg 50mm, Meade DSI Pro, PHD
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX
This image of a central portion of the Andromeda Galaxy is only a combined 36 minutes of exposure (9x4'). I was testing to see what kind of exposures I will eventually need to take a real image of this amazing galaxy, the nearest major galaxy to our Milky Way. After I calibrated and combined the images and began to stretch the histogram of the combined frame, I wondered if I might see some globular clusters around the galaxy. I know that amateurs with large scopes often hunt them down. Perhaps I could see a few, too?
A web search led me to Robert Gendler's amazing image of M31 in which he has labelled a bunch of globs. I compared my image with his and found quite a few matches. Going to the source of his labels, Paul W. Hodge's Atlas of the Andromeda Galaxy, I realized that I could see not just a few but very many. I have not labelled all of those that I found, actually. Some are too faint to see unless the image is blown up, and some are located near the center of the galaxy where Hodge's plates, or at least those found on the website, are too blurred or noisy to read. But I have labelled sixty-four, many more than I thought I would find.
Not bad for 36 minutes through an 80mm scope.
Telescope: Stellarvue SV80ED NHNG f/7 w/WO ff/fr 0.8 II (so effectively at f/5.6)
Camera and Exposure: SXVF-H9C, 9x4'
Filter: IDAS-LPS2
Guiding: Borg 50mm, Meade DSI Pro, PHD
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX
December 3, 2011
M45, Pleiades, (Six of) Seven Sisters, Subaru (Nov. 27 & 28, 2011)
Thanks to Dick Locke for processing suggestions. Here is another rendition of the same data:
Telescope: Stellarvue SV80ED NHNG f/7 w/WO ff/fr 0.8 II (so effectively at f/5.6)
Camera and Exposure: SXVF-H9C, 69x10'
Filter: IDAS-LPS2
Guiding: Borg 50mm, Meade DSI Pro, PHD
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX
November 30, 2011
M35 & NGC 2158 (Nov. 28, 2011)
Here are two open clusters in the constellation Gemini. M35 is the apparently larger, bluer cluster. It is younger and is relatively close. NGC 2158 is the apparently smaller, redder group. It is much farther away and very much older. Its stars have passed the blue stage and moved on to the older, redder stage. There is also some dust between us and NGC 2158 that reddens the view. The result is a nice contrast between the two clusters.
Telescope: Stellarvue 80ED NHNG (SV80ED) f/7 w/WO ff/fr 0.8 II (so effectively at f/5.6)
Camera and Exposure: SXVF-H9C, 10x8'
Filter: IDAS-LPS2
Guiding: Borg 50mm, Meade DSI Pro, PHD
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX
Telescope: Stellarvue 80ED NHNG (SV80ED) f/7 w/WO ff/fr 0.8 II (so effectively at f/5.6)
Camera and Exposure: SXVF-H9C, 10x8'
Filter: IDAS-LPS2
Guiding: Borg 50mm, Meade DSI Pro, PHD
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX
November 8, 2011
SH2-261 (Nov. 3, 2011)
This nebula in Orion is also called Lower's Nebula. Apparently Lower was a father-son team who recorded the nebula on photographic plates in 1939. See here. The two were accomplished amateur astronomers and innovative astrophotographers.
This is just the H-alpha data. I'd like to gather other colors as well. For now, though, it's interesting to see. The Nebula covers an area larger than the apparent size of the full moon.
Telescope: Orion 120ST f/5 Achromat w/WO ff/fr 0.8 II (so effectively at f/4)
Camera & Exposure: Atik 16, 14x15'
Filter: Astronomik 12nm H-alpha
Guiding: Borg 50mm, Meade DSI Pro, PHD
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX
This is just the H-alpha data. I'd like to gather other colors as well. For now, though, it's interesting to see. The Nebula covers an area larger than the apparent size of the full moon.
Telescope: Orion 120ST f/5 Achromat w/WO ff/fr 0.8 II (so effectively at f/4)
Camera & Exposure: Atik 16, 14x15'
Filter: Astronomik 12nm H-alpha
Guiding: Borg 50mm, Meade DSI Pro, PHD
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX
November 5, 2011
IC 1795 (Nov. 3, 2011)
This striking cloud of hydrogen lies in the eastern part of the constellation Cassiopeia and is part of a much larger nebula also known as IC 1805 or the Heart Nebula. This image is primarily glowing hydrogen and perhaps nitrogen. It was taken through a filter that records only those wavelengths. I hope to back for the glowing oxygen next week.
Telescope: Orion 120ST f/5 Achromat w/WO ff/fr 0.8 II (so effectively at f/4)
Camera & Exposure: Atik 16, 14x15'
Filter: Astronomik 12nm H-alpha
Guiding: Borg 50mm, Meade DSI Pro, PHD
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX
Telescope: Orion 120ST f/5 Achromat w/WO ff/fr 0.8 II (so effectively at f/4)
Camera & Exposure: Atik 16, 14x15'
Filter: Astronomik 12nm H-alpha
Guiding: Borg 50mm, Meade DSI Pro, PHD
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX
October 30, 2011
Melotte 15 in IC 1805 (Oct. 28, 2011)
Melotte 15 is a cluster of young stars at the heart of a large cloud of gas and dust often called the Heart Nebula, IC 1805. Mel 15 is the heart of the Heart. The cloud and cluster lie in the constellation Cassiopeia.
Telescope: Orion 10" f/4.7 Newtonian and Baader RCC1
Camera and Exposure: SXVF-H9C, 20x10'
Filter: IDAS-LPS2
Guiding: SX Lodestar and SX OAG
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX
Telescope: Orion 10" f/4.7 Newtonian and Baader RCC1
Camera and Exposure: SXVF-H9C, 20x10'
Filter: IDAS-LPS2
Guiding: SX Lodestar and SX OAG
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX
Subscribe to:
Posts (Atom)






