Astromania Bahtinov Mask Focusing Mask For Telescopes Fm180Mm For A Tube Outer Diameter (Od) From 195Mm 240Mm Can Be Mounted
$29.62
Regular price
$42.31
-29%
Couldn't load pickup availability
Customer Love Badge
⭐Loved by +2,002 customers
Shipping information
Our Shipping Promise
At Electroeshop, we understand that your pet supplies are important. That's why we take extra care with every package we send. All orders are shipped in double-boxes with full insurance for additional protection, ensuring your items arrive safely.
Processing & Shipping Timeline
Processing Time: Orders are processed within 1-3 business days
Domestic Delivery: Typically 3-5 business days
Please note that delivery times are estimates and may vary based on your location, weather conditions, or other unforeseen circumstances.
Shipping Destinations
Electroeshop currently only ships to the United States.
Shipping Costs
We are pleased to offer free standard shipping on all orders within the United States.
Discreet Packaging
We respect your privacy. All Electroeshop packages are shipped with complete discreet packaging. The product name, description, sender's name, and any information that hints about the contents are encrypted. Your package will arrive without any indication of what's inside, ensuring your purchase remains confidential.
Signature Requirements
Important Note: All orders valued above $250 will require a signature upon delivery for your protection.
Order Tracking
Once your order ships, you'll receive a tracking number via email so you can monitor your shipment's progress every step of the way.
Lost or Delayed Shipments
If your package is lost or significantly delayed, please contact our support team immediately, and we will assist you in resolving the issue.
Additional Security Measures
For your protection, we may contact you for additional order verification of the payment method on certain orders.
Questions or Concerns?
For details on returns and refunds, please refer to our Return Policy page. For any questions about shipping or delivery, please contact our customer service team at support@Electroeshop.com.
The Bahtinov Mask Has Become The Preferred Method Of Focusing A Telescope, Either Visually Or When Imaging With A Ccd Camera, Dslr Or Webcam.They Are An Inexpensive Tool Which Will Allow You To Achieve Pin-Sharp Levels Of Focus, Saving You Time And Improving Your Work. Simply Place The Mask Over The Front Of Your Scope, Align The Scope Towards A Star. The Mask Displays A Unique Diffraction Profile; One Part Of The Diffraction Pattern Moves In Response To Changes In Focus And Displays Error As A Displacement From A Clearly Defined Point.Whether Youre Doing Planetary Visual Observing, Planetary Imaging,Or Deep Sky Imaging, The Bahtinov Mask Is A Great Accessory To Get The Best Focus For Your Telescope Quickly And Easily.These High Quality Bahtinov Masks Are Adjustable To Fit A Wide Range Of Optical Tubes, Unlike Masks Which Are Only Able To Fit One Telescope.The Masks Grip The Telescope Tube Gently But Firmly With Three Metal Posts Which Have Non-Scratching Silicon Sleeves To Protect You Valued Telescope Surface. This Prevents Slippage, Whilst Allowing The Mask To Remaining Perfectly Central. Because Of This 3-Post Mounting, The Mask Remains Centered, Whilst Fitting A Wider Range Of Telescopes.There Is A Myth About Different Bahtinov Grating Pattern Is Required For Different Focal Length Telescopes. There Is No Real Practical Reason For The Use Of Special Patterns For Different Telescope Types And Focal Lengths. In Fact, The Frequency And Angle Of Bahtinov Mask Patterns Arent Really That Important. The Diffraction Effect Is So Sensitive To Changes In Focus, That The Results Are Excellent Regardless. Please Be Assured That These Focusing Masks Will Work Excellently For Both Reflectors And Refractors With Whatever Focal Length. All You Need To Do Is To Measure Your Telescope Tube Size And Choose The Right Size Of The Mask.
<div class="dynamic-checkout__content" id="dynamic-checkout-cart" data-shopify="dynamic-checkout-cart"> <shopify-accelerated-checkout-cart wallet-configs="[{"name":"shop_pay","wallet_params":{"shopId":71498399780,"merchantName":"Electroeshop","personalized":true}},{"name":"amazon_pay","wallet_params":{"checkoutLanguage":"en_US","ledgerCurrency":"USD","placement":"Cart","sandbox":false,"merchantId":"A1D97EELABIYRS","productType":"PayAndShip","design":"C0002"}},{"name":"paypal","wallet_params":{"shopId":71498399780,"countryCode":"US","merchantName":"Electroeshop","phoneRequired":true,"companyRequired":false,"shippingType":"shipping","shopifyPaymentsEnabled":true,"hasManagedSellingPlanState":null,"requiresBillingAgreement":false,"merchantId":"8A5HAXWFFESWY","sdkUrl":"https://www.paypal.com/sdk/js?components=buttons\u0026commit=false\u0026currency=USD\u0026locale=en_US\u0026client-id=AfUEYT7nO4BwZQERn9Vym5TbHAG08ptiKa9gm8OARBYgoqiAJIjllRjeIMI4g294KAH1JdTnkzubt1fr\u0026merchant-id=8A5HAXWFFESWY\u0026intent=authorize"}}]" access-token="ab31e70b5cc21a1ceee088fbb76625d8" buyer-country="US" buyer-locale="en" buyer-currency="USD" shop-id="71498399780" cart-id="050f4a898130657210368783d34eed92" enabled-flags="["2d75a54c"]" > <div class="wallet-button-wrapper"> <ul class='wallet-cart-grid wallet-cart-grid--skeleton' role="list" data-shopify-buttoncontainer="true"> <li data-testid='grid-cell' class='wallet-cart-button-container'><div class='wallet-cart-button wallet-cart-button__skeleton' role='button' disabled aria-hidden='true'> </div></li><li data-testid='grid-cell' class='wallet-cart-button-container'><div class='wallet-cart-button wallet-cart-button__skeleton' role='button' disabled aria-hidden='true'> </div></li><li data-testid='grid-cell' class='wallet-cart-button-container'><div class='wallet-cart-button wallet-cart-button__skeleton' role='button' disabled aria-hidden='true'> </div></li> </ul> </div> </shopify-accelerated-checkout-cart> <small id="shopify-buyer-consent" class="hidden" aria-hidden="true"> One or more of the items in your cart is a recurring or deferred purchase. By continuing, I agree to the <span id="shopify-subscription-policy-button">cancellation policy</span> and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. </small> </div>
