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Aluminum Alloy Bahtinov Focusing Mask 170-240mm Caliber Fixed Diameter 175-220mm
the Bahtinov Focus-Mask over the end of your telescope, then locate a
bright star near your target, take a 3-5 second picture and view the
diffraction spikes. Change your focus, take another picture and again,
view your diffraction spikes. Is the center spike moving further from
center? Then change the direction your focusing and try another picture.
Watch the direction the spikes are moving and when the center spike
passes the middle of the other two spikes, change direction and fine
tune your tuning knobs until the center spike is in the middle. Your now
in perfect focus.
- The Bahtinov Mask Made of aluminum alloy, not plastic. And it has whole anodizing aluminium process
- Masks now feature 3 holes which can be attached with 3 screws to prevent the mask from falling all the way to the ground
- Perfect focusing for your CCD, DSLR or Webcam in seconds
- Light weight so you wont upset the balance on your scope
for telescopes front end diameter 175mm to 220mm, Universal adaptation,
3 bolts with plastic cover allow the mask to be simply attached to any
- Aluminium alloy material thickness: 1 mm
- Weight: 104g
- Color: Black
NOTE : Pay attention to the size please Package Includes:
- 1 X Bahtinov Mask
- 3 X Screw Kit
We accept payment via PAYPAL.Please make sure Ebay address is correct.
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Payment must be received within 7 business days of auction closing.
Processing time:as the item description.
We will prepare the shipment in 48-72 hours(Sundays and holidays excepted. )after we receive the payment and after the eCheck is cleared.
Please make sure the Ship-To address you type during checkout is correct. We are not responsible for any wrong or undeliverable addresses.
We strive our best to provide you the most reliable, affordable way of shipping service. But sometimes international delivery is highly depended on the Courier Company and local customs/duties. If you do not receive your item on time, please contact us immediately for further assistance. Thank you for your understanding.
Custom fee (including VAT&GST):
Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office before bidding. We will try our best to help customer do customs clearance.
A:Overseas Warehouse Local Dispatch
From US Local Dispatch: USA: 2-6 business days , other countries: 5-14 business days.
From UK Local Dispatch: UK: 1-5 business days , other countries: 3-8 business days.
From DE Local Dispatch: Deutschland: 1-3 business days , other countries: 2-5 business days.
From AU Local Dispatch: AU:2-6 business days. B: China Domestic Dispatch
CountryDelivery TimeWorking Days(not including holiday)5-78-1112-1415-1920-22>22Working Days+Saturday+Sunday5-910-1516-2021-2526-30>31United KingdomRate(item arrived)9.9%63.2%19.1%3.4%4.4%RefundAustraliaRate(item arrived)21.4%50%14.3%7.2%7.1%RefundFranceRate(item arrived)10.5%28.6%43.8%10.1%7%RefundGermanyRate(item arrived)11.1%22.2%30.3%20.9%15.5%RefundCanadaRate(item arrived)0%47.1%31.4%17.6%3.9%RefundSpainRate(item arrived)3.5%25%47.9%12.9%10.7%Refund Note:You can pay extra shipping cost to get express delivery, such as EMS, DHL or UPS. It just takes about 5-10 business days to receive order, please contact us if necessary.
We stand behind every product we sell. If you're not pleased with your purchase, we'll be happy to make an exchange or refund the product price less Shipping &handling within 30 days of your purchase via parcel post.
Please contact us before you return the item, we will offer you the right return address
For any exchange or refund, we need the product must be in its original receipt,including the box, packaging and all the accessories.
Buyers are responsible for the returning shipping cost. Shipping and handling charges are not refundable.
Refund and replacement: Once the carrier has received your item, Please allow up to 10 business days for returns to be processed.
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The Bahtinov Mask Made of aluminum alloy, not plastic. And it has whole anodizing aluminium process
Masks now feature 3 holes which can be attached with 3 screws to prevent the mask from falling all the way to the ground
Perfect focusing for your CCD, DSLR or Webcam in seconds
Light weight so you wont upset the balance on your scope
Suitable for telescopes front end diameter 175mm to 220mm, Universal adaptation, 3 bolts with plastic cover allow the mask to be simply attached to any telescope
Aluminium alloy material thickness: 1 mm
Filed under: Eyepieces & Accessories