Products
Collections
Shop by Price
Shop by Brand

Baader 40mm Sky Surfer V Night & Day Red Dot Finder

Baader 40mm Sky Surfer V Night & Day Red Dot Finder
  Zoom
 Baader 40mm Sky Surfer V Night & Day Red Dot FinderBaader 40mm Sky Surfer V Night & Day Red Dot Finder 
Price:  £116.00(Inc. 20% VAT)
+

Model:  2957315
Brand:  Baader

Availability  

  

Generally In Stock, Please Confirm Before Ordering



2 Year Warranty On All New Items
(Excluding Batteries & Globes)



Originally this product had a military function, hence it is built like a tank.

With both jump covers flipped open, the unit works as a terrestrial as well as an astronomical Red Dot Finder for straight through aiming with both eyes open, featuring a sharp 2 MOA red dot with 11 brightness set points. The three lower light settings are intended for night work against the sky.

With both jump-covers closed, the unit works as a safe daylight solar finder, projecting the solar disc through a 1.5 MOA (minutes of arc) pinhole onto a 40 mm wide rear 2 MOA reticle. The reticle is applied onto a yellow UV-blocker for added safety against accidental straight viewing. The projected solar image can be centered onto the reticle without looking straight through the finder.

To not loose sighting stars, the view though the SkySurfer V is markedly brighter compared to regular gunsight red dot visors.
All lenses and optical windows of the SkySurfer V are fully multicoated for maximum starlight throughput
The optical body and all adjustments are waterresistant, fogproof and shockproof
SkySurfer V comes fully assembled with anti-dew extensions and jump covers mounted.

SkySurfer V: scope of supply
Features of the SkySurfer V
Fully multicoated lenses provide increased light transmission
Illuminated red dot reticle is highly visible in daylight and dimmable for unimpaired night vision
Unlimited eye relief
Use with both eyes wide open
Red Color does not impair nightvision
35 mm deep added dew-shields on either side prevent fogging of the lenses and work as a perfect straylight shield.
70 mm elevation of Universal Red Dot Mount enables effortless aiming even when mounted onto the optical tube of a Newtonian telescope (most low profile red dot aiming devices don't provide enough "face-space" between telescope and finder.
Ready out of the box: Extension tubes and jump covers readily mounted
Front jump cover features a 1.5 MOA center hole to work as moisture release when closed after use and to work as daylight pinhole projector.
Rear jump cover features a 40 mm yellow UV-blocked window with integrated opaque reticle with 2 MOA (minutes of arc) center hole to catch the solar image projected by the front 1.5 MOA center hole.

0.7 mm / 1.5 MOA bore hole, prevents moisture and is used for solar projection
Technical Data
Magnification: 1x
Objective Lens Diameter: 40 mm
Reticle: Illuminated, 2 MOA (minute of arc) Red Dot
Adjustment Gradation: 1 MOA per click / 48 clicks per revoution
Waterresistant and Fogproof
Battery: 1 CR2032 (included)
Fits directly on 11mm Weaver micro gunrails, and with standard adapter (not included) onto Weaver- und Picatinny rails
Length: 210 mm (8.5")
Weight: 310 g (base: 55g)
Sky Surfer V - scope of supply
Sky-Surfer V basic optical module (Fits directly onto 11mm Weaver micro gunrails. When reversing the clamping brackets, the SkySurfer V directly fits onto all standard rails (20 mm) of Weaver and Picatinny)
2 pc. 35 mm optical tube extensions (mounted on optical body)
Front jump cover #2957311 with 0.7 mm through-hole to work as solar "camera obscura" when cover is closed (mounted on extension tube)
Rear jump cover with yellow glass cover with opaque crosshair reticle and UV/IR blocking filter
Baader Universal RDM Red Dot Mount #2457010
Baader Standard Base #2457000

2' (MOA) dot size. Diameter of Moon: 30'.
SkySurfer V Red Dot Reticle
Nocturnal Red Dot Size: 2 Minutes of arc (2 MOA), provides a most (unleserlich???) "vanishing point"
Daylight Red Dot Size: 3 Minutes of arc (3 MOA)
Use with both eyes wide open
Red Color does not impar nightvision
11 variable illumination settings (3 settings for night vision)
Lithium battery with up to 4000 hours lifetime at #1 nocturnal dial

Be the first to Write a Review for this item!

Some items that are showing as in stock are in stock at our holding warehouses, not at the shop. To double check the stock levels at the shop, please contact us on 01909774369 or sales@rothervalleyoptics.co.uk.

The delivery times for most items is 1 - 2 days but again, please double check stock levels on important orders before placing an order via the website.

The delivery costs for courier next day are for mainland UK only. If you live in the Scottish Highlands/Islands, Channel Islands or Northern Ireland, then a shipping surchage will apply. please contact us for prices. Smaller items can still go 1st class via Royal Mail.

Please note that if you are wanting to take advantage of our Saturday and Sunday timed services or next day pre 12 or pre 10:30 services, you MUST check that the stock is here at the shop before placing orders. Also, orders using the Saturday and Sunday services must be placed before 1pm the previous working day. Also, please remember to check that the stock is here at the shop before placing orders. If the stock is not at the shop, we won't be able to ship on any of the timed services. 

Please note International customers will need to contact us for a shipping price prior to ordering via the website. We don't ship all items internationally. It is at our discretion what we ship outside of the UK. This all depends on the size and weight of the items. Please get in touch with us for any postage costs. Please note we do NOT ship telescopes or heavy items outside of the UK. This is due to massive postage costs and problems regarding returns.

If you have any questions regarding stock levels or delivery, please get in touch.

Zygo Interferometer Testing For ED Refractor Telescopes!

We are extremely pleased to announce our Zygo Interferometer is now installed and ready for use! Our experienced staff can test refractor lenses up to 120mm aperture and provide a comprehensive 2 page report showing the optical quality and Strehl ratio, plus much more information. We are using the very latest Zygo MX software to provide a more detailed report compared to other standard reports.

 

The interferometer is essentially a measuring instrument. Within the interferometer is a calibrated laser that is pointed through the optical test surface, then onto a high quality reference sphere, then back through the test subject then to an internal camera which gives us the measurement on the screen. From this, we can adjust the position of the test optic and the reference sphere to obtain a perfectly calibrated system. The more central the laser to the test optic and then on return, the better and more accurate reading and measurement we can take. This takes a lot of adjustment to get the best results from the optical surface. Once the measurement has been taken, we are provided with a series of results that show the optical quality of the surface plus other information. Continue reading for an explanation of the individual values and you can also see a test report that was done on one of our RVO Horizon 60 OTAs. 

We are offering certain telescopes with a Zygo test at an extra cost. Mainly ED doublets and triplets. All available telescopes with a Zygo test report are listed here. Just select Zygo Test Report from the drop down box at the top of the listing and we will test the optics in house and provide a full 2 page report with your scope. This will show you the optical quality of your telescope optics. We can also offer this service on your refractor telescope. Please get in touch for more details about this. 

At Rother Valley Optics, one thing we pride ourselves on is customer service and quality of our equipment. When we test your telescope, we will ensure that it is of the highest quality otherwise, we will reject the scope under our strict quality control and test another model for your peace of mind. One of the main values to look at when testing a refractor is the Strehl ratio. The higher this number, the higher quality lens you have. At Rother Valley Optics, we will guarantee the highest possible Strehl ratio for your telescope.  We will aim to provide 0.95 Strehl or higher on Takahashi, RVO Horizon, William Optics and many more! Generally, the higher the Strehl ratio, the lower the Astigmatism and Coma meaning a better image quality from your instrument. 

Other measurements such as the PV and RMS are important too. With these measurements, the lower the number the better as it shows less curvature on the lens. The flatter an optical lens, the better it will perform. The PV rating (Peak To Valley) is a measurement from the highest point (Peak) to the lowest point (Valley). From this we get the RMS (Root, Mean, Square). This is a similar figure to the PV and measured exactly the same way. The RMS is basically an average height difference from the PV so again, the lower the better. As you can see form the example below, we measured an RMS of just 0.027 wave which is a very good value.

We also measure the Power with our systems which is essentially the error from the reference sphere to the test optic. The reference sphere we use on our system is a very high quality sphere so the closer to zero the Power, the less error between the 2 elements thus ensuring a higher quality optical surface. 

You will also see some more values such as Astigmatism and Coma. Again, these are measured by the interferometer when we take measurements of the optical surface after adjustment. These are values which ideally would be at 0 but as our test optics are all curved lenses, there will always be astigmatism and coma present. The lower the number, the less of these aberations you will effectively see but with most refractors, you can buy field flatteners which will compensate for the coma anyway. The astigmatisms value is explaining the error between the symmetrical curvature of the lens. Basically, no lens will be perfectly symmetrical, the lower the astigmatism, the more symmetrical the lens surface is. 

Once the Zygo test report has been completed, the optical alignment is thoroughly tested and tuned to ensure they are spot on before they leave us. 

All available telescopes are on the website at the link below and ones we've tested already that are available straight away are also listed.

https://www.rothervalleyoptics.co.uk/zygo-tested-refractors.html

Here is an example of the test what we provide. This was a test on one of our Horizon 60 ED OTA's.

For any questions about this amazing new service, please either call 01909774369 or email sales@rothervalleyoptics.co.uk.

 


Related Products
Antares Red Dot Finder with Right Angle Finder

Antares Red Dot Finder with Right Angle Finder£44.99

The red-dot finder with right angled finder is ideal for observing at steep angles, ideal if you don't want to strain your neck. The spot is easily seen centered with your eye at the output barrel.

Baader Sky Surfer III Red Dot Finderscope

Baader Sky Surfer III Red Dot Finderscope£34.00

Baader's zero power red dot finderscope fetauring a 30mm optical aperture with anti-relective lens coatings. Supplied with a score of bases to fit it onto virtually telescope including all major brands.

Skywatcher Red Dot Finder

Skywatcher Red Dot Finder£25.00

The Red Dot Finder makes setting up the telescope a snap. After proper alignment, the Red Dot Finder superimposes a small red dot on the sky, where the telescope is pointed. It is an ideal companion to the wide field short-tube refractors.