Optolong L-eNhance 1.25" Dual Band Filter
When does the delivery take place?
Delivery times vary depending on the country and destination postal code. They will be shown at checkout and apply only to products currently in stock.
For products marked as Not in stock, processing may take between 5 and 15 days. If delays occur, our customer service will contact you with timely updates.
What are the warranty terms?
All our products come with a 24-month legal warranty. Some brands provide extended warranty. Contact us for more info.
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Can I return a product?
You have the right to return a product within 14 days from delivery, as stated in our Refund Policy. Return shipping costs are the responsibility of the customer. Items must be returned in their original condition and packaging. Please contact us before returning.
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The Optolong L-eNhance 1.25” is a 10nm dual band filter in 1.25” (31.8mm) format for CMOS, CCD and DSLR color cameras. Up to 90% peak transmission on H-Alpha, H-Beta and OIII, over 99% blocking of artificial light pollution. Affordable one-filter solution for emission nebulae from urban skies.
Technical Specifications
| Filter type | Dual Band (H-Alpha + H-Beta + OIII) |
| Peak transmission | ≥90% |
| Off-band blocking | >99% |
| Blocking range | 300–1000nm |
| Format | 1.25” (31.8mm) |
| Substrate | B270, 1.85mm |
| Surface quality | 60/40 |
| Wavefront RMS | 1/4λ |
| Parallelism | 30" |
| Recommended cameras | Color CMOS, Color CCD, DSLR |