Optolong астрономический Телескопический фильтр Alpha OIII SII

 Optolong Astronomical Telescope Filter Alpha OIII SII LRGB

SHO stands for SII, H-Alpha, OIII narrow-band filters, generally working with astronomical monochrome cooling CCD and modified DSLR  imaging in each single-channel . Corresponding with RGB channel (Ha, OIII, SII), photographers can process Hubble images by astronomical post processing software.

Main Use and Performance

² Allowing only a very narrow range transmitted by specific bandwidth design

² Increasing the contrast between the target and the night sky

² Blocking the moon emission, artificial light and infrared

Technical Data

² Schott substrate material

² Scratching resistance coating by independent designed technology

² Produced by OPTORUN machine

² High precision filter created by full automatic production equipment

² Qualified coating refinement

² Extremely durable

Garllery

Package details:

1.With the QC to check every astronomy filters before packing .
2.Every astronomy filter is put in PP plastic case.

   Package list:

   1X astronomy photography filter

   1X PP plastic case

   1X spectrum test report

   1X carton 
3.Strong paper carton package .
Compact packing for all thefilters without gaps ; which avoid the filter shaking heavily during shipment .

Delivery details:

Normally, we ship order within 2-3 days after payment received.
Order can be shipped by DHL , FedEx, UPS, TNT ,EMS , air , sea.
We have the discount account of these expresses , and clearly know their differences for the prices and shipping time , can offer you the best suggestion for the shipment according to your needs .

1. Why do we need a light pollution suppression filter?

The astrophoto is more easily washed out by sky background, or overposed, which makes the longer exposure impossible. But we all know that it is important to expose your images so that faintest detail is not impacted by noise of your DSLR camera (CCD). Light  pollution filters are designed to block wavelengths of skyglow, and more generally light pollution, and passing other wavelengths(particular the nebula lines), thus allowing longer astrophoto exposures to be made filters blocking light pollution while not weaken signals of objects. It is true that longer exposure times with light pollution filters work while exposure effects will not change with or without filters.

2. Is it enough that only one filter work on all objects?

No. it isn't. Different filter has different degree of suppression.  Filter designed to select specific narrow emission lines may suppress broad parts of the spectrum, decreasing the light from broadband source even more than filters designed for balanced color photography.  Broadband filter such as L-Pro filter performance better than UHC filter for full spectrum objects. But for emission line objects and serious light pollution areas, UHC is a good choice.  

3.There is some problem with the product design. Could you help us to resolve the problem?

We are much appreciate supply you product design. With years of developing, we have much experience and own understanding of coating design according to different applications. There is much we could do for you.

4. Could Optolong support on prototype for sample offer?

There is no MOQ requirement for the prototype filters. We even could offer free samples for OEM according to the condition.

5. Could Optolong supply OEM for customer?

Yes, we could. Send us your data details which your requirement. Our technical engineer will design products for you. Furthermore, Optolong standard products also welcome.

OUR ADVANTAGES

We have five precious vacuum coating machines which chamber from 700mm to 1300mm. And a set of spectrophotometer (UV-VIS-NIR Shimadzu UV3150) which is imported from Japan. And we have complete glass/lens cleaning, processing and inspection equipments, such as Ultrasonic Cleaners with 12 sinks, grinding/cutting machines.