What is a Barlow lens? In most cases Barlow lenses are being used for multiplying the original focal length of the telescope, thus allowing observations at higher magnification with the same eyepiece. This can be very handy when observing the planets or features of the Moon. Also, if you have a range of eyepieces then buying a Barlow lens may be the cheapest way of expanding the range of available focal lengths or the resultant magnifications.
This 4-element Tele-Extender would increase the magnification of any eyepiece 5 times.
The 4-element design combined with fully-multi coated optical elements promices significantly reduction of chromatic aberration,...
This is a LONG, 2-element, 2x achromatic Barlow lens from 365AstronomyFull metal construction.The aim of Barlow lenses is to prolong the telescope's focal length, so e.g. with a 2x Barlow, when we divide the doubled focal...
This is a short, 2-element, 3x achromatic Barlow lens from 365Astronomy Full metal construction. The aim of Barlow lenses is to prolong the telescope's focal length, so e.g. with a 3x Barlow, when we divide the tripled...
This is a SHORT, well corrected, 3-element, 3x achromatic Barlow lens with T-adapter for camera connection (camera specific T-ring will have to be added, too). Full metal construction.We've tested it and compared...
This is a SHORT, 3-element, 2x Apochromatic Barlow lens from 365Astronomy. High quality Japanese 2x Barlow lens with nearly no false colour in full metal construction. Due to the short construction it is recommended for use...
This is a HIGH QUALITY 4-element, 3x Apochromatic Barlow lens from 365Astronomy. High quality Japanese 3x Barlow lens with practically no false colour and in full metal construction.Due to the medium length construction...
This is a 2.5x achromatic Barlow lens. However please note, it's a 3-Element Barlow, so its quality is closer to a real APOCHROMATIC BARLOW. The aim of Barlow lenses is to prolong the telescope's focal length, so e.g....
A high quality 2x achromatic Barlow lens from GSO. It is an excellent quality 2-Element achromatic Barlow lens that will double the focal length of your telescope.
A wonderful 3x semi-APO Barlow lens. It's an excellent quality 2-Element semi-apochromatic Barlow lens. The aim of Barlow lenses is to prolong the telescope's focal length, so e.g. with a 3x Barlow, when we divide...
TeleVue's 1.25" Powermate T-Ring Adapter replaces the eyepiece holder of 1.25" 2.5x and 5x Televue Powermate Barlow lenses and allows users to attach a DSLR or CCD imaging camera, with a user-supplied and...
This 2" to 1¼" adapter allows more in-travel for 1¼" eyepieces than our "flat-top" or "high-hat" adapters. This adapter is designed to attach to the 1¼" eyepiece...
With freedom from aberrations, greater magnification potential, and compact size, Powermates pick up from where Barlow lenses can go no further. Powermates are not Barlow lenses...They do it much better... Powermates are the...
With freedom from aberrations, greater magnification potential, and compact size, Powermates pick up from where Barlow lenses can go no further.Powermates are not Barlow lenses...They do it much better...Powermates are the...
Offered in 2x and 3x magnifications, these 1¼" Barlows perform identically. Simply choose either or both based on your eyepiece collection. Features include parfocal-ization, 1¼" filter threads, captive...
Offered in a 2x magnification, the Big Barlow is ideal for Newtonian scope owners. It will be parfocal with both 2" and 1¼" eyepieces in this application. Features include 1¼" eyepiece adapter,...
Offered in 2x and 3x magnifications, these 1¼" Barlows perform identically. Simply choose either or both based on your eyepiece collection. Features include parfocal-ization, 1¼" filter threads, captive...
With freedom from aberrations, greater magnification potential, and compact size, Powermates pick up from where Barlow lenses can go no further.Powermates are not Barlow lenses...They do it much better...Powermates are the...
With freedom from aberrations, greater magnification potential, and compact size, Powermates pick up from where Barlow lenses can go no further. Powermates are not Barlow lenses...They do it much better... Powermates are the...
Both the 2x and 4x 2" powermates have a very unique feature: you can unscrew the 2" eyepiece housing (eyepiece holder barrel) and screw on a special T-ring adapter for solid, compact attachment of CCD or camera...
Both the 2x and 4x 2" powermates have a very unique feature: you can unscrew the 2" eyepiece housing (eyepiece holder barrel) and screw on a special T-ring adapter for solid, compact attachment of CCD or camera...
It's a 2-inch 2-Element 2x ED Achromatic Barlow Lens for 1.25" and 2" eyepieces.This high quality Barlow from GSO is excellent for planetary observations and imaging. The aim of Barlow lenses is to prolong the...
Despite of its title it's NOT an achromatic, but a 5x semi-APOCHROMATIC Barlow lens.This high quality Barlow from GSO is excellent for planetary observations and imaging. The aim of Barlow lenses is to prolong the...
The APM Coma Correcting Barlow re-defines what is possible with a Barlow lens at a surprisingly low price. It has been designed by Gerd Düring in Germany following much discussion with users as to what would represent the...
If you don't yet have a Baader Hyperion Zoom eyepiece, but want to use a superior APO quality Barlow lens with your 1.25" eyepieces, here is the perfect combo that contains the Baader Hyperion Zoom Barlow and the...
SkyWatcher x2 Economy Barlow Lens The x2 Skywatcher Economy Barlow Lens will double the power obtained with any given eyepiece, whilst maintaining excellent image quality, offering an affordable way to increase your ...
SkyWatcher x2 Deluxe Achromatic Barlow Lens (1.25"/31.7mm) with T-thread (male)This nice achromatic Barlow lens can be used as a simple Barlow lens or as a T-adapter with or without the Barlow lens. The lens can very...
This is a SHORT, well corrected, 3-element, 3x achromatic Barlow lens with T-adapter for camera connection (camera specific T-ring will have to be added, too). Full metal construction.We've tested it and compared...
A quick message for those who might have thought to miss this promotion is that due to the fact that 1 Jan was a bank holiday followed by a weekend, we decided to end it on the morning on the first working day of the year: 9am on Monday, 4 January 2021.
So from now you will still have about 36-37 hours to make a decision... The following camera are in this promotion:
ASI071MC-PRO (APS-C sized),
ASI6200MC-PRO (full frame) ASI6200MM-PRO (full frame) and various bundles with this monochrome camera,
ASi2400MC-PRO (full frame, large pixels),
ASI1600GT (with built-in filter wheel),
ASI183GT (with built-in filter wheel),
ASI2600MC-PRO (APS-C sized) (one of the most popular cameras these days),
ASI533MC-PRO (smaller square filter, but extremely popular) ASI1600MMP-KIT3 (this is the only camera that will stay on promotion till stocks last),
ASI462MC-PRO (currently the best and most popular planetary camera due to its extreme sensitivity in near IR),
ASI120MC-S and ASI120MM-S (no introduction needed - our longest selling planetary imagers and guide cameras),
and finally but not lastly at all: ASIAIR PRO (and BUNDLES) - the must have all rounder astro photographer's brain and power center for your ZWO camera: for aligning, locating, guiding and imaging, etc. - all in one...
Hope you can find something on the above list that might be worth considering!
Fitting a 2-inch BDS-RT Baader Diamond Steeltrack Focuser to a Teleskop-Service GSO 8-inch Ritchey-Chretien
Background
The TS 8-inch RC has M90x1mm connections at the focuser end of the scope. My setup has a TS
50mm extension adapter with for 6- & 8-inch RC connected to the scope (TS part no: GSRCV50),
to accommodate the long back-focus.
Attached to this is a TS M90 tilting adapter flange (TS part no: GSRCJ90). This is an aid to
collimation and allows the long axis of the focuser to be aligned with the optical axis of the scope.
I then have a standard TS monorail focuser for the RC, again with an M90x1 connection.
Image 1 shows the 50mm extension and tilting flange, with the old focuser removed. Note the M90
male thread at the end of the flange, to which the focuser connects.
Fitting the Baader Diamond Steeltrack RT
It is assumed that the reader has access to the Steeltrack manual and has purchased the necessary
RT-Adapter M90x1 Diamond Steeltrack (Baader part nu...
PLEASE READ IT! IMPORTANT! COVID-19 and STOCK AVAILABITITY INFO:
Please note that currently we receive about 10 times more phone calls, 3-4 times as many emails, orders etc. whilst we work with reduced staff, so please be patient.
BRESSER, EXPLORE SCIENTIFIC, LUNT and VIXEN products: whilst we do stock some of these products, in many cases we would rely on the distributor's stock. Their warehouse is in Germanyand currently the delivery times are about 7-10 days from there, although this is not exactly a promise. Brexit caused lots of problems and huge delays generally. We expect that it will take several months till the situation will improve. SKYWATCHER, Helios, Zenith and OVL Products: we will not accept any orders on backorder for these products until further notice due to price change. We were advised that the weak USD caused increase of product prices in China, plus shipping costs increased by 600%, so we expect a new pricelist with increased prices shortly.
PLEASE CONTACT US TO CHECK CURRENT AVAILABILITY BEFORE YOU ORDER ANY SKYWATCHER, CELESTRON, OVL, BAADER, BRESSER, LUNT, TS and ZWO PRODUCTS (and possibly some others as well), AS STOCK LEVELS FLUCTUATE AND WE JUST CANNOT UPDATE THE LEVELS IN REAL TIME...
If you have an urgent inquiry, please call Zoltan on his mobile during working hours (Mon-Fri 9am-5pm)
Please send a text or WhatsApp message to Zoltan ONLY if you failed to call him or if it is extremely urgent. His mobile has been flooded with messages as well...
079 1278 4737 (international format: + 44 79 1278 4737)
Thanks for your patience!
Keep safe and healthy!
sidenote... TO THE ATTENTION OF OUR INTERNATIONAL CUSTOMERS!
EU CUSTOMERS: We have temporarily disabled European destinations whilst we adjust our system to the new VAT rules. Hopefully we'll be able to resume shipments to EU countries soon.
USA CUSTOMERS: shipping to the USA is active again, but we request customers to confirm product availability before placing an order! If you are ordering an MGEN-3, no need to check stock, we've got plenty of those. Please note, we will try to avoid sending goods via a postal service due to the huge delays and as DHL Express is more expensive than our system would currently charge for, we might have to charge extra depending on the value and size of the ordered goods.
Please note, due to the increased number if issues with postal services to most directions (especially Australia, Canada etc), we will only ship to these countries on the base of special request and depending on the value and size of the products. This is a temporary measure and we hope to supply worldwide again as soon as the situation improves.
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