A B400 blocking filter is installed inside the star diagonal. The B400 is really good for visual observing. For solar imaging we advise the version LS50THa/B600PT with larger blocking filter. Focusing is achieved by a smooth, non-rotating Helical focuser.
Double-stacking the Lunt LS50THa, producing a bandwidth of only <0.5 Angstrom is possible by using the additional available LS50C filter (0550210). This filter threads directly onto the front lens cell of the LS50THa telescope.
Specifications:
Aperture: 50 mm
Focal Length: 350 mm
Bandwidth: <0.75 Angstrom
Tuning: air-pressure tuning system "Pressure-Tuner"
Blocking Filter: B400
non-rotating Helical focuser
Tube-ring with 1/4-20 tapped base (standard thread for photo-tripods)
Our 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, DHL and Royal Mail, we do not use budget courier services, we can only ship to UK mainland addresses and 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 ship each business day, orders received before lunch are normally 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
