Deep Sky Object in Summer
Around Sh2-24, Sh2-33 (Diffused Nebulae in Serpens)
Click on image to enlarge
| Date & Time: | Apr 8 2022, from 25:55 to 27:42 JST(+0900) |
| Composed 27 shots with 4 minutes exposed |
| Optical: | AF zoom-Nikkor ED 80-200mmF2.8 (f=105mm, stop: F4.0) |
| with Kenko Starry-Night filter |
| Auto-guided with VIXEN ATLUX Equatorial |
| Digital Camera: | Canon EOS 6D (Remodeled) |
| Location: | Ooizumi, Hokuto city, Yamanashi pref. |
| Camera Settings: | Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5472×3648) |
| Device Size...36×24mm, Sensitivity...ISO2000 |
This star field image has captured dimmed molecular clouds around the southern region of Serpens Caput with a span of 19×13°.
A dimmed nebula in upper part with a size of 30×20 arc minutes is Sh2-33, and a southern stripe-shaped one has an ID of Sh2-24.
Those nebulae have been estimated about 360 to 470 light years away, fairly close distances.
Dark nebulae of LDN134 and LDN 183 are lying near μSer. in center of the picture.
And you can detect an elliptical molecular cloud of LBN1122 in lower side, belonging to Libra.
Moreover, you can detect a part of a vast reddish nebula of Sh2-27 surrounding ζOph in lower left hand side of the image.
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| Sh2-24 / Diffused Nebula, type 5 E |
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| R.A. | 16h 11m 03.6s (2000.0) |
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| Dec. | -07°04' 37" (2000.0) |
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| Apparent Size | 30.0×10.0' |
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| Real Size | N/A |
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| Magnitude | - |
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| Distance | 470 light yrs. |
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| Other IDs | LBN 17 |
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| Sh2-33 / Diffused Nebula, type 6 E |
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| R.A. | 15h 59m 52.3s (2000.0) |
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| Dec. | -01° 37' 02" (2000.0) |
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| Apparent Size | 30.0×20.0' |
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| Real Size | N/A |
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| Magnitude | - |
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| Distance | 360 light yrs. |
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| Other IDs | LBN36 |
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|
| LDN134 / Dark Nebula, type 5 E |
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| R.A. | 15h 53m 36.0s (2000.0) |
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| Dec. | -04°39' 00" (2000.0) |
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| Apparent Size | 22.0×12.0' |
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| Real Size | N/A |
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| Magnitude | - |
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| Distance | N/A |
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