The SkyTech LPRO-MAX is a premium filter designed to improve the visibility of objects visually or when imaging, by blocking light pollution, while transmitting light from objects otherwise hidden. It is the best option for imaging in moderate light pollution as the design helps retain natural colour balance.
SkyTech LPRO-MAX filters are suitable for colour and mono CMOS and CCD cameras. LPRO-MAX blocks UV and IR light, for sharper stars. LPRO-MAX special coatings are more complex to make than UHC and CLS coatings, therefore the cost is higher than these filters, however they transmit all the usual emmission wavelengths, with the added bonus of allowing more starlight and reflection nebulosity though. Mono cameras can also be used with the LPRO-MAX to capture Luminosity channel in LRGB imaging in light polluted areas. The LPRO-MAX 2" filter is compatible with the Altair Hypercam series CMOS cameras and telescopes (the LPRO-MAX screws into the front 2" nosepiece of the camera or a 2" eyepiece / adapter), as well as the Hypercam DSLR lens adapter (the LPRO-MAX 2" filter fits inside the housing behind the lens, protected from dust).
Milky Way wide field imaging:
The LPRO-MAX specially tuned passband gives an even more natural colour rendition than CLS or UHC filters because it allows more starlight through than UHC and CLS filters, giving a more natural looking milky way. Less post-processing is required to eliminate colour casts when using the LPRO-MAX.
LPRO Max provides a more contrasty view than CLS and UHC filters, and is a better choice for visual use where one desires to see galaxies and stars as well as nebulosity. Due to the wider band transmission, the LPRO-MAX filter is suitable for viewing deepsky objects with smaller aperture telescopes. Being a 2 inch filter this is ideal for widefield with large fields provided by wide angle 2 inch eyepieces.
Precision machined aluminium housing with standard "Astro" 2" filter thread (M48x0.75mm thread pitch).
Schott glass substrate material with a precision polished optical surface.
Glass thickness 1.0 mm.
Surface Quality: 60/40
Fine-optically polished 1/4 wavefront and < 30 sec parallelism over both surfaces
95% transmission of main nebula emission lines (i.e. Ha 656nm, OIII 496nm & 500nm, SII 672nm and H-beta 486nm).
0.1% transmission of off-band, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm).
Dichroic Filter Coatings:
Multi-layer anti-reflection coating (AR Coat). with an additional UV IR Blocking layer. Special high homogeneity coating process with electron-beam gun evaporation and Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL (central wavelength), no deviation with temperature change.
Our standard delivery charge for most of the UK is £2.95. All orders are shipped promptly, lower value items are sent Royal Mail 1st class and higher value or larger goods are shipped via reputable courier. All goods are shipped fully insured with FEDEX, UPS, DPD and Royal Mail, we do not use budget courier services, please note we can only ship to UK mainland addresses. We are not able to ship to forwarding agents or PO boxes.
Our Order Lookup system (see very top of each page for the icon and link) updates the order status in real time for you - simply by entering your order number and postcode..
We hold stock, dozens of telescopes and literally thousands of accessories that we ship out each business day, normally orders received before lunch are shipped that business day. We also direct ship from our UK suppliers, this means we have access to thousands of products that can ship fast to our customers.
Deliveries to UK mainland addresses are all shipped with fully insured premium services for £2.95, *some exceptions apply including many AB, FK, HS, IV, KA, KW, PA, PH, ZE postcodes. We will quote delivery charges to these areas where applicable prior to shipping (this does not normally affect lower value items shipped by Royal Mail).
You must inform us within one working day if the goods are lost or damaged in transit so that we can make a prompt claim against the delivery company and correct the problem. Please ensure all address details are accurate, we cannot be responsible for failed deliveries or losses arising from incorrect delivery addresses.
You agree that proof of delivery supplied by our delivery company is sufficient evidence to establish that goods have been received.
If your product is sent by Courier they will attempt delivery twice and a signature will be required. If they are unable to deliver because you are not available and after 5 days you have not contacted them to re-arrange. the goods will be returned to us and the return delivery costs may be charged to you