Violet 2024


Violet Friday Offers: Here You can expect heavily discounted items from many well-known manufacturers. If you want to buy a telescope or accessories - whether for yourself or as a gift - Violet Friday is the perfect opportunity to find a great deal and benefit from attractive discounts.

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80MM White Light  SOLARSCOPE
The Acuter Solarus-80 is an 80mm solar telescope with a secure, fixed glass white light solar filter. 
  • 80mm Solarus solar telescope with built-in glass solar filter
  • 1.2'' zoom eyepiece 25x, 40x and 80x
  • save solar finder
  • Filter wheel with inserted red, yellow, blue, green, orange & ND (neutral density) filters, with practical filter indicator.
  • 90° zenith mirror
  • Universal smartphone adapter (smartphone not included!)
  • 45mm Vixen mounting rail (side-mounted)

219.00 € 197.00 €
Estimated delivery time : 3-4 days
 
 
2" adapter for Leica 8.9 to 17.8 mm zoom eyepiece.
60.00 € 54.00 €
Estimated delivery time : 1-2 weeks
 
 
2" adapter for Leica 8.9 to 17.8 mm zoom eyepiece.
60.00 € 54.00 €
Estimated delivery time : 1-2 days
 
 
The attachment kit enables the ZW-Optical EAF motorised focusing system to be connected and makes focusing child's play. The EAF system enables focussing via the computer with temperature compensation.
79.90 € 67.92 €
Estimated delivery time : 3-4 days
 
 
Equip the popular Skywatcher Quattro Newton Linear Power focusers with the ZWO EAF motorised focus system.
  • Suitable for Skywatcher Quattro Newt on Linear Power focusers
  • Enables the use of the EAF motorised focus system from ZWO
  • Manufactured using 3D printing
  • Resistant to UV and temperatures up to approx. 80° C
  • The Skywatcher Linear Power focuser is not included in the scope of delivery
49.90 € 42.42 €
Estimated delivery time : 3-4 days
 
 
This field flattener is designed to work with the Altair 115ED Triplet Wave Series Refractor with M63 2.5" CNC Focuser. It has an M48 rear thread adaptor for connecting your DSLR or CCD camera.
279.00 € 251.00 €
Estimated delivery time : 2-4 weeks
 
 
This reducer - flattener is designed to work with the Altair Astro Wave Series 115mm EDT-X FPL53 102mm F7 Super ED Triplet APO.

It consists of two components:

  • The flattener body containing the optics, with M92 male outer thread on the telescope side and M72 female inner thread on the camera side
  • An M72 to M48 adaptor-spacer with M72 male outer thread on the flattener side and M48 male outer thread on the camera side. The adaptor has a 21.62mm optical length, to give 55mm sensor to flange distance. 
449.00 € 404.00 €
Estimated delivery time : 2-4 weeks
 
 
This field flattener is designed to work with the Altair Astro Starwave Series 115EDT Triplet APO.
239.00 € 215.00 €
Estimated delivery time : 2-4 weeks
 
 
This filter slider holds a mounted 1.25" filter and fits into the Altair version 2 magnetic filter holders.
52.00 € 46.80 €
Estimated delivery time : 1-4 days
 
 

The new TriBand V2 Filter

  • Anti-Halo coating on both surfaces to reduce reflection artefacts from reducers and camera lenses.
  • Increased blocking of UV, IR and unwanted visual range wavelengths. UV OD7 (T0.00001%) Visual OD5 (T0.001%) and IR OD4 (T0.01%) for the ultimate in skyglow blocking. This is an order of magnitude better than foreign filters.
  • Higher transmission % of desired wavelengths Ttop 93% (Average 5% higher transmission of target wavelengths than V1). In general a 5% gain on foreign filters.
  • Ha at 14nm and Oiii at 34nm FWHM for with less tail-off to reduce unwanted light pollution, whilst keeping transmission high compared to the V1.
 
159.00 € 143.00 €
Estimated delivery time : 1 week
 
 
The Altair Astro 60mm finder also has many more features than your average finder scope:
  • This finder is right angled for more comfort, with a corrected field (i.e. not mirror-reversed like other finders), so objects actually match their orientation in your star chart.
  • The focuser can also be rotated 360° and locked in seconds (requiring some re-alignment afterwards). The 10mm larger objective and a little extra power compare to 8x50 finders, yet has almost the same size and weight.
  • The included quick-release finder base has 4x 4mm slotted holes in the base allowing you to fit it to most telescopes on the market. (The mini-dovetail wedge on the bracket will fit any GSO or Skywatcher telescope directly in fact but we suggest you use the included base if it fits the tube, because it has 2x clamping screws, for better alignment).
  • The CNC machined bracket is light yet rigid to keep alignment. Nylon tipped screws do not damage the durable high quality and moisture resistant powder coated aluminium tube.
  • All objective lenses are anti-reflection coated and the tube and dewshield are internally blackened to increase contrast. The included illuminator has a variable setting, which illuminates the cross hairs in the eyepiece. The included eyepiece has a dark field illuminated cross-hair, so you can easily see it glowing faintly against the background sky, an upgrade for standard finders with dark cross-hairs.
  • The high quality 1.25 FMC illuminated eyepiece has good eye relief for glasses-wearers, and a wide field of view. It has a side-port to screw in the included variable darkfield illuminated reticule, and the finder can be very easily focused, using the included helical focuser integrated with the prism diagonal.
269.00 € 242.00 €
Estimated delivery time : 2-4 weeks
 
 
The Altair Dichroic Solar Energy Rejection Filter or D-ERF protects your telescope and solar imaging equipment from excessive heat build-up when solar imaging or observing with your Daystar Hydrogen Alpha Quark, or other Hydrogen Alpha Etalon filters.
756.00 € 680.00 €
Estimated delivery time : 1-2 weeks