NGC1647 area-wide NELM chart - Help in field testing an NELM magnitude chart

This post is to request the group's assistance in field testing a
Naked-Eye-Limiting-Magnitude chart for the wide-area around NGC1647,
an open cluster in the Taurus constellation, currently at the zenith
for 40 degrees north. This chart is also applicable to estimating
NELM around the Haydes stream. This NELM chart is limited to
low-variance photometry B, A and O single-stars.

NGC1647 area wide v4.8 to 7.0 magnitude chart:
http://members.csolutions.net/fisher...chart_mags.htm

HD and Flamsteed name cross-reference chart:
http://members.csolutions.net/fisher...hart_names.htm

NGC1647 area wide star number system chart:
http://members.csolutions.net/fisher...ar_numbers.htm

NGC1647 area wide v4.8 to 7.0 chart infopage:
http://members.csolutions.net/fisher...ect_v48_70.htm

Prior NELM charts for this vicinity are the International Meteor
Observers organization ("IMO" http://www.imo.net/visual/ ) naked eye
limiting magnitude chart for the area bounded by Aldebaran (alf
Taurus), zeta Taurus, and beta Auriga, titled "IMO Limiting Magnitude
Area 8," with an accuracy of 10ths of a magnitude. See -

http://www.imo.net/visual/major01.html#table2

IMO NELM Area 8 is located at the center of the NELM chart presented
here. See -

http://members.csolutions.net/fisher...chart_mags.htm

This chart can be used as a supplement or cross-check against the IMO
NELM Area 8 chart. I was unable to verify the identity of the
specific stars used in the IMO chart, and for my application, I needed
some statement of the uncertainty of the photometric or photoelectric
measurements of each star's Johnson V and B magnitudes. Additionally,
a Simbad search of stars in IMO NELM Area 8 returned many variables
and stars in multiple systems. These stars could not be separated from
the IMO star list.

This NELM v4.8 to 7.0 chart can be used in conjunction with narrow
field (1°) magnitude charts of NGC1647 for v9.0 to 13.0. See –

http://members.csolutions.net/fisher...ect_v90_13.htm

Thanks – Kurt

My main NGC1647 notes homepage is at:

http://members.csolutions.net/fisher...47_Project.htm