Hershel 400 Objects in Delphinus


Abbreviations in the CON column are the IAU versions.
The column TYPE has following abbreviations:
OPNCL = open cluster PLNNB = planetary nebula GLOCL = globular cluster CL+NB = open cluster and nebulosity BRTNB = bright emission or reflection nebula
Hubble Classification for galaxies or GALXY where no classification existed.

In the Herschel Column the Classes are:
I = Bright Nebulae III = Very Faint Nebulae V = Very Large
Nebulae
VII = Pretty Much Compressed
Clusters of Large or Small Stars
II = Faint Nebulae IV = Planetary Nebulae VI = Very Compressed and Rich Clusters of Stars VIII = Coarsely Scattered
Clusters of Stars
NGC_#
Con
Type
RA_2000
Declination
Mag
Size
Hershel_#
Observation Notes
6905 DEL PLNNB 20 22.4 +20 06 12.0 44"X38" H IV 16 Bright, pretty large, elongated 1.5 X 1, central star easy at 100X. Moving up to 270X with a Barlow lens reveals that the east and west sides are brighter than the rest of the nebula. This planetary is pale green at all powers. I have heard NGC 6905 called the "Blue flash nebula" but I have never seen blue in this object.
6934 DEL GLOCL 20 34.2 +07 24 8.9 2' H I 103 Bright, pretty large, much compressed, round and has a brighter middle at 100X. It can be seen in the 11 X 80 finder or 10 X 50 binoculars. This is the type of object that responds with a much better view on a clear, transparent night. On a night I rated 6/10 for seeing and transparency, down on the floor on the desert near the Organ Pipe Cactus National Forest, I could only resolve 3 stars with a mottled core at 160X. At the same power on a beautiful night in the Red Rock country near Sedona at 5000 ft., this globular blazed with 40 stars resolved, 6 of them in the core area. This is the kind of observation to postpone until those rare 9/10 evenings when stars twinkle very little and the Milky Way blazes overhead.
7006 DEL GLOCL 21 01.5 +16 11 10.6 2.8' H I 52 Pretty bright, pretty small, round, very bright middle and very compressed at 100X. This very distant globular is one of the most mottled objects I have ever seen in the 13" at 180X. This extremely grainy globular has only shown me stars on its' face one time. Using my old 18" f/6 at 210X, I saw 3 stars superimposed on the surface of NGC 7006. One was held steady, the other two appeared and disappeared with the seeing. This was on a night I rated 8/10 for transparency and 7/10 for seeing.