OPTOLONG New Optolong Filter 2-inch L-Quad Enhance Filer Professional L-Quad Enhance Filter (L-QEF)

Name: OPTOLONG New Optolong Filter 2-inch L-Quad Enhance Filer Professional L-Quad Enhance Filter (L-QEF)
Brand: Oak Astro
Price: 171.90 GBP
Availability: InStock

£171.90 GBP

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L- Quad Enhance Filter Spectrum: Based on the characteristics of celestial bodies’ emission lines and light pollution emission lines, L-Quad Enhance filter effectively reduces the impact of light pollution and suppresses the background light of astronomical objects, thus effectively enhancing the contrast and details of the celestial bodies. Using L-QEF filter can help you save a lot of time during the shooting process, yet obtaining incredible results.

L-Quad Enhance Filter is a quad bandpass light pollution suppression filter for colour cameras. It effectively suppresses the transmission of light pollution wavelengths, especially light pollution generated by artificial lighting (including mercury and sodium lamps), as well as the effects of natural skylight-induced effects on the shot, thus effectively enhancing the contrast and details of the celestial bodies, and making the objects more distinct and stereoscopic. This filter provides better
▲Better suppression of starbursts; Higher contrast and more details of the celestial bodies; Better colour saturation; Better signal-to-noise ratio (SNR); ▲Near IR cut-off to 1000nm, reducing the effects of IR noise; ▲L-QEF has more than 90% transmittance of the nebula emission lines at H-Beta/OIII/H-Alpha/SII, with cut-off depth from OD2 to OD4, thus providing a significant increase in resistance to light pollution. L-QEF is good for night sky from Bortel 1 to Bortel 7 levels; (Bortel 8, Bortel
Photo Filter Thread Size: 48.0 meters
Material: Aluminium
Coating Description: Multi Coating
Water Resistance Level: not_water_resistant

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Brand	OPTOLONG
Material	Aluminium
Photo filter thread size	50.8 Millimetres
Coating description	Multi Coating
Photo filter effect type	light_pollution_suppression
Water resistance level	Not Water Resistant
Product dimensions	5.1L x 5.1W centimetres
Photo Filter Size	48 Millimeters
Number of items	1
Set Name	1x L-Quad Enhance Filter

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Let customers speak for us

from 97 reviews

Fits perfectly, raises the dwarf high enough to clear the clamp screw

David

07/05/2026

OA Skywatcher EQ Wedge Riser v2

You’ll be glad you got it with the filter holder.

I paired this with my OakAstro filter holder to raise the Seestar S50 above the SkyWatcher Star Adventurer Wedge so the S50 rotates freely and the filter holder does not foul the wedge. It’s a simple device but quite important to the overall performance.

Tony Dodd

06/22/2026

A great business to deal with.

Searching for something for my SeeStar I came across Oak Astro. I received fast responses to my questions and a very prompt despatch (and delivery) of goods I ordered. Just the sort of business I like to deal with!

06/16/2026

Oak Astro

Simple and very effective.

It is hard to fault this device! I bought it because I wanted to add different filters to my SeeStar S50 and because I wanted to reduce extraneous light getting in. It works on both counts. I recommend users read the manual as the mounting flap could easily be damaged by not following the publiushed guidance.

Seestar S50 OA-OAKv2

S50 OA -OAKv2

All arrived in good condition, a nice update from the original set,just waiting for dark enough skies to put them to use

D Clarke

Game changer

Great bit of kit, dew shield and filter holder all in one. Its a clever design and a game changer. Make sure you read the accompanying instructions to make the installation and removal easier.

Paul Maddocks

05/30/2026

Superior Quality

All of the accessories are very well made and top quality. My favorite one is the dew shield. It has a little more length than other competitors and the internal flocking really make a difference.

John Walker

05/27/2026

OA-DL-Mini-OAK

Excellent

Excellent quality

Tobias Fredeking

04/24/2026

OA-D3OAK Dwarf 3 Optical Accessory Kit

Excellent Accessory Set for Dwarflab Mini Smartscope

I recently ordered Oak Astro's dew hood,bahtinov focus mask and star diffraction set.
Firstly, I live in New Zealand, about as far away as one could possibly be from Oak Astro, I was highly impressed with the fast delivery time.
Upon inspection, the items delivered are robust, of very high quality and precision manufacture. The threaded components mate perfectly. The dew hood is internally flocked and has absolutely no internal reflections.
Owing to poor viewing conditions (overcast, cloudy nights) I have not yet had the opportunity to test the items on any astro objects, however I have no reason to doubt that they will perform as advertised.
The accessory carry bag is a nice bonus.
In conclusion, I highly recommend this product to other Dwarf Mini users.

Russell Colina

04/15/2026

Great Quality on both the Mini and the D3 items

Great Quality on both the Mini and the D3 items I purchased. Very happy.

Mr Simon Thompson

04/14/2026

Really enjoying using the Dwarf3 accessory kit

Really enjoying using the Dwarf3 accessory kit. Was packaged well, came with a useful storage bag, and shipped quickly. Thanks.

Nancy S.

Easy to use, great results

I've been using the dew shield since I received it, and have been very impressed. Full disclosure: I ordered and have been using itmore as a lens hood than to counter dew as so far I have not been imaging near to the dew point here in France. As a lens hood, it has been excellent and has helped a great deal! The street lights here switch off at 11 PM, but with the shield on my Dwarf Mini I've been able to get images (of clusters) even when the nearest streetlight on the road above is inside the wide-angle camera's field of view. I've also noticed improvements when imaging away from that light, as the hood keeps light from elsewhere in town getting to the lens directly.

I feel that I should also note that, despite the hood blocking part of the wide angle field of view (as was noted in the description), this does not appear to affect the deep sky mode at all. I have not as yet noticed any effect on the ability of the Mini to calibrate, to set up EQ mode, or to find, goto, and track targets.

Derek MacColl

04/07/2026

Dwarf 3 Optical Kit Perfection

Love it. Exactly does what I needed it to do. Excellent Quality.

Barb Arsenault

04/03/2026

Excellent for my Dwarf 3 system

Excellent for my Dwarf 3 system, especially the light shield due to streetlights.

Neil Dyson

03/27/2026

Livraison rapide et conforme

Livraison rapide et conforme , objet de très bonne qualité.
Je recommande !!!👍

Anonymous

03/20/2026

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OPTOLONG New Optolong Filter 2-inch L-Quad Enhance Filer Professional L-Quad Enhance Filter (L-QEF)

OPTOLONG New Optolong Filter 2-inch L-Quad Enhance Filer Professional L-Quad Enhance Filter (L-QEF)

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