Deep Sky Object in Summer
Around B97 (Dark Nebula in Scutum)
Click on image to enlarge
| Date & Time: | Apr 9 2022, from 27:00 to 27:40 JST(+0900) |
| Composed 6 shots with 8 minutes exposed |
| Optical: | TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3) |
| with IDAS LPS-D1 Light-pollution suppression filter |
| Auto-guided with TAKAHASHI JP Equatorial+SBIG STV |
| CMOS Camera: | ZWO ASI2600MC Pro (Cooled temp.: -20°C) |
| Location: | Ooizumi, Hokuto city, Yamanashi pref. |
| Camera Settings: | Recording format...16bit FITS, converted to 16bit TIFF(6248×4176) |
| Device Size...23.5×15.7mm, Gain...100 |
This image shows you a corner of the Milky Way in the western region of Scutum.
A dark nebula B97 occupies most of the image has a round shape with diameter of 50 arc minutes, relatively eye-catching one of dark nebulae distributed around here.
Just east of B97, a reddish H-alpha emission nebula of Sh2-56 is lying with a size of about 7 arc minutes.
More, a small open cluster in the lower left-hand side is NGC6649, contains 50 or more stars within 5 arc minutes diameter.
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| B97 / Dark Nebula, type 4 Ir |
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| R.A. | 18h 29m 06.0s (2000.0) |
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| Dec. | -09°56' 00" (2000.0) |
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| Apparent Size | 50.0' |
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| Real Size | N/A |
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| Magnitude | - |
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| Distance | N/A. |
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| Other IDs | LDN 435 |
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| Sh2-56 / Diffused Nebula, type 6 E |
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| R.A. | 18h 31m 06.1s (2000.0) |
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| Dec. | -09°42' 52" (2000.0) |
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| Apparent Size | 7.0' |
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| Real Size | 32 light yrs. |
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| Magnitude | - |
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| Distance | 15600 light yrs. |
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| Other IDs | LBN 77 |
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| NGC6649 / Open Cluster, type I 3 m |
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| R.A. | 18h 33m 28.8s (2000.0) |
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| Dec. | -10°24' 09" (2000.0) |
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| Apparent Size | 5.0' |
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| Real Size | 6.5 light yrs. |
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| # of Stars | 50 |
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| Magnitude | 8.9 |
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| Distance | 4500 light yrs. |
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