B 334 (LDN 701) / B 336 (LDN 702) / B 337 (LDN 705) Dark Nebulae in Aquila
Center of field at approximately: RA 19 hours 36 minutes 21 seconds, Dec +12 degrees 19 minutes 42 seconds
Size: 3.4' x 2.2' / 2.0' x 1.0' / 3.0' (~40' - LDN 701, 702, 705); Magnitude: all --; Class: all -- (4 Ir - LDN 701, 702, 705)
North is up
West to the right
| Telescope: |
8" f5 Newtonian reflector |
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| Camera: |
ST-8XME, self-guided, binned 1x1, temp -10c & -15c, camera control MaxIm DL 4.56 |
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| Image: |
Lumicon Deep Sky filter, 240 minutes (24 x 10 minute subs), 09/2/7/2007 |
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| Processing: |
CCDStack 1.3, Photoshop 7.0 |
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| Location: |
Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s) |
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| Notes: | These three little Barnard dark nebulae are not much to look at in
this dense Aquila Milky Way star field. They also have no individual
'Class' designations ... The dark nebula designations
LDN 701, LDN 702 and LDN 705 have a
combined cataloged size of
about 40' x 5.0'. The CDS list the center of
B 334 at 19h 34m 54s, 12h 16m 59s ... about 7 minutes SSW of my
software's (Megastar v5.0.12) position. The Megastar position is
centered at the "Small, dark marking, diam. 3' " position. This puts the
'center' of B 334 at the West edge of my field ... The
drawn outline of B 334 agrees with the CDS position. These descriptions from the on-line Edward Emerson Barnard "A Photographic Atlas of Selected Regions of The Milky Way":
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Small,
dark marking, diam. 3´. An extension from this small spot curves
to the southwest. The star BD+11°3897 (8.8 mag) is on the south
edge of this curve