Optolong L-eNhance

Formats

1.25″ Mounted
2″ Mounted (48mm thread)
Canon EOS APS-C Clip-in

Spectral Transmission

Yellow line is published transmission. Color fill is my independent verification with the filter I tested.

Physical Characteristics of 2″ Filter

Filter mount thickness: above threads: 4.97mm; including threads: 6.93mm
48mm threads with 0.75mm spacing
Minimal knurling only on top
Dual bandpass narrowband filter
Inner retaining ring does have notches for easy filter disassembly with a spanner
Width of the glass filter without the filter mount is 45.93mm

Real World Tests

Bortle 8, Stock Canon EOS T7, 464mm f.l., f/5.4, ISO3200, 36 min. integration (9*4″). Open full-size image in new tab.

Bortle 8, Full Spectrum Modified Canon 60D, 464mm f.l., f/5.4, ISO3200, 36 min. integration (9*4″). Open full-size image in new tab.

Comparisons to No Filter

Stock Canon T7 - No filter vs. Optolong L-eNhance

Full Spectrum Modified Canon 60D - No filter vs. Optolong L-eNhance

Reader Rating60 Votes

69

Pros

Excellent Value

Transmits the Ha and [OIII] emission lines at over 85% transmission

Blocks light pollution better than typical light pollution filters

Cons

Results appear noisier with less contrast than some competitors because the filter passes more light pollution

95

Purchase from:

High Point Scientific