Deep Sky Object in Autumn
IC1396 (Diffused Nebula in Cepheus)
Click on image to enlarge
| Date & Time: | Aug 16 2012, from 22:01 to 22:19 JST(+0900), 6min.×4shots |
| Aug 16 2012, from 22:30 to 22:42 JST(+0900), 6min.×3shots |
| Mosaic of 2 flames |
| Optical: | TAMRON SP300mmF2.8, Aperture: F2.8 |
| with Astronomik CLS-CCD filter |
| Auto-guided with TAKAHASHI EM-200 Equatorial |
| Digital Camera: | Canon EOS 600D (Remodeled) |
| Location: | Oogawara pass, Saku city, Nagano pref. |
| Camera Settings: | Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456) |
| CCD Sensitivity...ISO1600 |
| IC1396 / Diffused Nebula, type 2 E |
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| R.A. | 21h 39m 6.0s (2000.0) |
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| Dec. | +57° 30' 00" (2000.0) |
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| Apparent Size | 165×135' |
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| Real Size | 120×100 light yrs. |
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| Magnitude | - |
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| Distance | 2500 light yrs. |
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| Other IDs | LBN451, LBN452
Sh2-131 |
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IC1396 is a vast round nebula at the north side of the Milky Way in autumn,
has a diameter of about 3 degrees.
There is a red star with fourth magnitude at the north edge of the nebula, you'll see the star being a curious red with scopes.
The star, mu Cephei is a semiregular supergiant that also varies roughly from 4.5 to 3.5 with a very long period of 730 days,
and prompting William Herschel to call it the Garnet Star.
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Click on image to enlarge
Close-up of vdB142
| Date & Time: | Dec 29 2018, from 19:49 to 20:17 JST(+0900) |
| Composed 10 shots with 3 minutes exposed |
| Optical: | Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3) |
| with BaaderPlanetarium Moon&Skyglow filter |
| Auto-guided with Meade LX200 Equatorial & Pictor 201XT |
| Digital Camera: | Nikon D810A |
| Location: | Ooizumi, Hokuto city, Yamanashi pref. |
| Camera Settings: | Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4080×4080) |
| Device Size...20×20mm |
| Sensitivity...ISO4000, White Balance...Daylight |
| vdB 142 / Reflection Nebula |
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| R.A. | 21h 36m 41.0s (2000.0) |
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| Dec. | +57°30' 08" (2000.0) |
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| Apparent Size | 1.0' |
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| Real Size | N/A |
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| Magnitude | - |
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| Distance | 3000 light yrs. |
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This image shows you a reflection nebula vdB142 lying at central region of IC1396. You can see a clear lane of dark nebulosity from west to east, having a nick name of "Elephant trunk nebula".
The dark cloud has a "Bright-rim" structure, emitting reddish light in its edge.
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