Deep Sky Object in Summer
Around B335, B338 (Dark Nebulae in Aquila)
Click on image to enlarge
| Date & Time: | Jul 20 2025, from 21:12 to 23:10 JST(+0900) |
| Composed 12 shots with 6 minutes exposed |
| Optical: | BORG 67FL with conversion lens (f=324mm, F4.8) |
| with IDAS LPS-D1 Light-pollution suppression filter |
| Auto-guided with TAKAHASHI JP Equatorial |
| CMOS Camera: | ZWO ASI2600MC Pro (Cooled temp.: -5°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 |
Objects around B335, B338
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This image captures the region just west of Altair in the constellation Aquila, where dark nebulae distributed along the eastern side of the Milky Way can be seen.
The small but prominent B335 appears in the lower right of the field, while larger dark nebulae such as B338 and LDN 681 are visible near the center.
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| B335 / Dark Nebula, type 6 C |
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| R.A. | 19h 36m 55.0s (2000.0) |
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| Dec. | +07°34' 24" (2000.0) |
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| Apparent Size | 5.6×4.5' |
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| Real Size | N/A |
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| Distance | N/A |
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| Other IDs | LDN 663 |
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| B338 / Dark Nebula |
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| R.A. | 19h 43m 24.0s (2000.0) |
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| Dec. | +07°22' 00" (2000.0) |
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| Apparent Size | 11.0×11.0' |
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| Real Size | N/A |
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| Distance | N/A |
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| Other IDs | LDN 668 |
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| LDN 681 / Dark Nebula |
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| R.A. | 19h 44m 36.0s (2000.0) |
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| Dec. | +08°37' 00" (2000.0) |
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| Apparent Size | 42.0×18.0' |
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| Real Size | N/A |
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| Distance | N/A |
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