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This Item  Optolong 2" L-Enhance Dual Narrowband Light Pollution Filter (H-Alpha and H-Beta/O-III) |  |  |  |  |  | |
| Price | $217.60 | $306.00 | $65.00 | $389.00 | $109.99 | $199.00 |
| Delivery | Get it as soon as Monday, May 20 | Get it as soon as Tuesday, May 21 | Get it as soon as Tuesday, May 21 | Get it as soon as Tuesday, May 21 | Get it May 24 - 31 | Get it as soon as Tuesday, May 21 |
| Customer Ratings | ||||||
| Sold By | StarPal | StarPal | StarPal | StarPal | SVBONY Direct | StarPal |
| thread size | 48 millimeters | 48.04 millimeters | 50 millimeters | 48 millimeters | 1.25 inches | 48 meters |
| photo filter effect | Enhancing | Enhancing | Ultraviolet | Enhancing | Neutral Density | other |
| material | Plastic | — | Optical Glass, Glass | — | — | Aluminum |
| water resistance | not water resistant | not water resistant | not water resistant | not water resistant | not water resistant | not water resistant |
Reviews with images
A Stellar Improvement
Let me start off with the one and only real con I have with this item. My telescope has a built-in filter vault, so I need to essentially partially disassemble the telescope, screw in the filter, and put the telescope back together. Not in itself a problem. However, with the filter installed, it so darkens my view through my camera (since I'm using all this for astrophotography) that the stars are either completely gone or so very, very dim as to be no improvement and since I need to be able to focus the telescope / camera this is something of a big headache. Hopefully I can keep my focus setting locked in place but otherwise I will have to start off without the filter in, set up my focus, then take my telescope off the mount, open it up in the pitch black, install the filter, remount the telescope and pray to the universe above that I haven't nudged anything even a little out of how it was set. Not really the fault of the filter, but I hadn't anticipated it being this darkening to my view.Okay, setting that aside, I took the filter out for a test last night, in a totally light-polluted backyard in suburban Detroit, with a full-moon also in the sky and didn't even really try to set up anything with much effort. I just wanted to see roughly if this filter was worth the price. The result was the attached image of the Orion Nebula. I've photographed it before, but that was under a dark, dark sky far up north, and no moon, and none of those came out as nice as what I took last night under all the worst conditions. I'm a bit in shock that I took this photo. I'm still a pretty beginner amateur at this, and one who has very little money and has had to cobble together some mediocre equipment and still have only had sporadic success in the field, and though I'm sure others can and do take much, much more impressive shots that this one, for me it's a beaut and it was just the first try. So, though I've only barely used this filter I'm pretty impresssed with this result. I can barely wait to take a trek up north and test it out under ideal conditions. So from me, I'd say it is worth the price and it does take things up a few notches for sure.
Top reviews from the United States
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Reviewed in the United States on October 26, 2023
I've been imaging nebula using the SvBony UHC filter (dual wideband) to suppress bright star fields. The dimmer Sharpless objects require more suppression than the UHC provides, but I was unsure if the L-Enhanced would block too much light for use with a Stock DSLR camera. I am pleased that the L-Enhanced filter, while suppressing most white light, still passes enough light to focus my 100mm refractor with a bahtinov mask. I went from (3min UHC) to (5min L-Enh) to get about the same exposure level. Very pleased with the results and will be using the L-Enhanced on the dimmer emission nebula. The SvBony UHC is still excellent for brighter emission and some reflection nebula. I've attached a sample of SH2-101 Tulip Nebula (RGB level corrected and stretched) for comparison.
Images in this review
Reviewed in the United States on November 12, 2022
If you uses a fast OTA, Newt under F/4 or a RASA with a OSC - it is a must filter
Reviewed in the United States on November 12, 2022
Great all around LP dual band filter......if you use fast optics, as in an F/2 RASA this filter has a wide enough band pass to account for the shift. I also have the L-Extreme and L-Pro ..they all have their place! Great optics.
Reviewed in the United States on November 12, 2022
Images in this review
Reviewed in the United States on October 8, 2022
Let me start off with the one and only real con I have with this item. My telescope has a built-in filter vault, so I need to essentially partially disassemble the telescope, screw in the filter, and put the telescope back together. Not in itself a problem. However, with the filter installed, it so darkens my view through my camera (since I'm using all this for astrophotography) that the stars are either completely gone or so very, very dim as to be no improvement and since I need to be able to focus the telescope / camera this is something of a big headache. Hopefully I can keep my focus setting locked in place but otherwise I will have to start off without the filter in, set up my focus, then take my telescope off the mount, open it up in the pitch black, install the filter, remount the telescope and pray to the universe above that I haven't nudged anything even a little out of how it was set. Not really the fault of the filter, but I hadn't anticipated it being this darkening to my view.
Okay, setting that aside, I took the filter out for a test last night, in a totally light-polluted backyard in suburban Detroit, with a full-moon also in the sky and didn't even really try to set up anything with much effort. I just wanted to see roughly if this filter was worth the price. The result was the attached image of the Orion Nebula. I've photographed it before, but that was under a dark, dark sky far up north, and no moon, and none of those came out as nice as what I took last night under all the worst conditions. I'm a bit in shock that I took this photo. I'm still a pretty beginner amateur at this, and one who has very little money and has had to cobble together some mediocre equipment and still have only had sporadic success in the field, and though I'm sure others can and do take much, much more impressive shots that this one, for me it's a beaut and it was just the first try. So, though I've only barely used this filter I'm pretty impresssed with this result. I can barely wait to take a trek up north and test it out under ideal conditions. So from me, I'd say it is worth the price and it does take things up a few notches for sure.
Okay, setting that aside, I took the filter out for a test last night, in a totally light-polluted backyard in suburban Detroit, with a full-moon also in the sky and didn't even really try to set up anything with much effort. I just wanted to see roughly if this filter was worth the price. The result was the attached image of the Orion Nebula. I've photographed it before, but that was under a dark, dark sky far up north, and no moon, and none of those came out as nice as what I took last night under all the worst conditions. I'm a bit in shock that I took this photo. I'm still a pretty beginner amateur at this, and one who has very little money and has had to cobble together some mediocre equipment and still have only had sporadic success in the field, and though I'm sure others can and do take much, much more impressive shots that this one, for me it's a beaut and it was just the first try. So, though I've only barely used this filter I'm pretty impresssed with this result. I can barely wait to take a trek up north and test it out under ideal conditions. So from me, I'd say it is worth the price and it does take things up a few notches for sure.
Images in this review
Reviewed in the United States on December 11, 2019
In my assortment of astrophotography gear and filters this is hands down one of my go-to pieces. Blocks ambient light, light pollution, and moonlight very well while enhancing nebula.
Images in this review
Reviewed in the United States on December 21, 2019
Reviewed in the United States on July 13, 2020
Very pleased with this purchase. This filter lets the photographer capture narrow band images using a one shot color camera with ease. With the multiple band widths used, nebulae can be imaged without the time and expense of using a mono-color camera with separate hydrogen and oxygen filters. Nice quality!
Images in this review
Reviewed in the United States on December 22, 2019
Reviewed in the United States on October 13, 2022
Great on nebula.
Images in this review
