Telescope Reviews: Limiting Magnitude and NELM

See also the Best of Thread on Surface brightness

Limiting Magnitude Articles and Resources

Limiting Magnitude tests on M45 - More than a dozen binocular sizes
this thread has links to charts fro M45, M44 and Cr399. it also has the record of the best observations I've recorded with dozens of binocular attempts at reaching BLM.

Bino Magnitude Efficiancy - Handheld vs. Mounted

Binoculars Limit Star Magnitude with Small Scopes Comparisons

Call for Participants in Binocular Study of M45
This post includes links to charts you can use on M45 and provides an explanation of this study.

Some results from the initial Limiting Magnitude Study and a brief summary of some of the factors that will affect LM results

First Study of Limiting Magnitude on Cr399

Limiting Magnitude in Binoculars - Lab Report by EdZ
Explains the importance of magnification to achieve limiting magnitude.

Naked Eye Limiting Magnitudes in Taurus
includes a broad selection of stars identified from mag3 to mag6.5

NELM chart Little Dipper and Polaris

NELM chart area around Sagitta, M27 and Cr399

NELM chart of Delphinus

NELM chart Circlet of Pisces

Binocular Limiting Magnitude chart to mag 13.0 in M45 - The Pleaides
includes Naked Eye Limiting Magnitudes from 2.8 up to mag 7

Binocular Limiting Magnitude chart to mag 11.0 in CR399 - The Coathanger
includes Naked Eye Limiting Magnitudes from 5.1 to 7.3

Binocular Limiting Magnitude chart to mag 12.5 in CR399 - The Coathanger
same chart as in previous, updated to include deep magnitudes for BIG binoculars 100mm and larger,
or for use in mag6+ skies where even 20x80 binoculars might be able to go deeper than mag 12.0

Limiting Magnitude chart of M44 - the Beehive magnitudes not listed but symbols provide a guide from brighest to faintest stars

This post in the binocular forum has links to the above charts, tables of star magnitudes for use with the charts and reports on some data collected with many binoculars comparing the limits of magnitude that can be reached with various sizes of binocs.
Limiting Magnitude Charts and Tables

Southern Hemisphere Several LM Charts

See these threads for discussions of Surface brightness

Does aperture rule in bino land?

Deep Sky Observing with 70 , 80 and 100mm Binocs

Tonight's objects with 25 x 100 IF Oberwerks

edz

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