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Hubble Optics 5-Star Artificial Star for Testing and Collimating Telescopes

Hubble Optics 5-Star Artificial Star for Testing and Collimating Telescopes



The star test is the ultimate method to test and collimate your telescopes. The most and very much the only difficult part of doing the star test is that you need a star. Sadly, a real star is not always available, and you really may not want to spend your precious observation time doing a star test even when it is available.  Of course, you will also need a good tracking system for doing a star test with the moving star. After all the trouble, due to turbulence, the real star may not even reveal the true quality of your telescopes or give you perfect collimation.

An artificial star will provide you with an excellent alternative means to do the star test anytime and anywhere you want, without all the drawbacks of real stars. However, the problem with artificial star testing is that you really need different sizes of artificial stars for different telescopes of different apertures with different F/#, and even for the same telescopes but at different distances, and under different lighting conditions.

The innovative Hubble 5-star Artificial Star is a perfect solution to this problem. It has 6 bright white LEDs with 5 precision pinholes (50/100/150/200/250 microns). It will enable you to test practically all telescopes of different apertures with different F/#s, from any reasonable distances needed, and under different lighting conditions.

  • You can instantly find out which star is best for your particular telescope at that particular distance under that particular lighting environment by simply choosing the smallest possible star, but which still gives you a clear defocused image
  • You can even adjust the brightness of the stars by twisting the LED head.
  • You can mask out any 4 of the 5 stars with a provided magnetic mask.

With the Hubble Optics 5-star Artificial Star, telescopes are truly easy to test and collimate!

  • Please expose the mask only while star testing. Keep it clean to prevent the blockage of pinholes.
  • The unit should be kept in a clean Ziploc bag when not in use, separated from the magnetic mask.
  • 3 AAA batteries are required and are not included.

  • Please note that no instruction manual is included with this item. You can find a number of resources online that explain star testing. Another excellent reference is Harold Suiter's book Star Testing Astronomical Telescopes.
  • The Hubble Artificial Star was reviewed very favorably in Astronomy Technology Review magazine. You can read the entire article, courtesy of the magazine, by clicking on the link below.


Note: Occasionally, the product you receive might have a slightly different cosmetic appearance or labeling than what is shown. This can often change from batch to batch according to the whims of the manufacturer. However, you will always receive a brand new, original product as described above.

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2. ORDERING INFORMATION

Payment: We only accept Paypal and major credit cards through Paypal.

Shipping Method: United States Postal Service (USPS), unless otherwise specified.

Checkout: Please pay for the item(s) within 3 days from your account on eBay or by using the link in the email you receive from eBay.

Shipping Discount: We offer shipping discounts if you order multiple quantities/items. eBay will automatically show you the correct, discounted shipping costs when you check-out.

Combining Purchases: You can combine shipping for items purchased from us on eBay within 3 days. Buy the items individually, and check out together for all items. eBay will combine the shipping weights and show you the discounted shipping cost. You must check out for all items together via eBay for this. We cannot combine shipping costs after you check out individually for your purchases.

Sales Tax: 8.5% sales tax added if your Ship-To address is in California.

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3. US SHIPPING

Delivery Time: Most orders ship within 1 business day of receiving payment. First Class shipments will take 3-5 days to arrive after we ship it. Priority Mail shipments will take 2-3 days. However, these delivery times are NOT guaranteed by the USPS. Delays of up to 2 weeks can occur in about 5% of the shipments.

Tracking/Delivery Confirmation: We will send you a Delivery Confirmation number in the shipment notification email after your order ships. This is not detailed tracking, but it provides some very basic tracking info en route. Sometimes, the USPS neglects to update this info for a few days but your shipment is not affected.

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4. INTERNATIONAL ORDERING / SHIPPING

Shipping Cost: Click on the "Shipping and Payments" tab above and select your country to see your shipping choices and cost. If you need a shipping cost estimate for multiple items, please contact us.

Handling Fee: For all international orders, we charge an additional handling fee of 3% of the purchase price of the item(s). This will be added to your order total when you check out.

Delivery Time:

1) USPS First Class International: Delivery takes about 3-4 weeks after we ship your package. This can frequently take 4-6 weeks or more for several countries (8 weeks for Italy, Argentina, and South Africa; 8-12 weeks for Brazil). THERE IS NO TRACKING FOR FIRST CLASS SHIPMENTS. The information shown in your eBay account is just a customs form number - it is NOT a tracking number as incorrectly indicated by eBay. Once your package ships, we can do nothing but wait until your package arrives. Please do not become impatient and contact us in 2-3 weeks if your package has not arrived. If you don't receive the package in 6 weeks, contact us and we will work with you to resolve the issue. If you don't want to take the risk of this delay, then DO NOT USE First Class mail - use Priority or Express shipping instead.

(2) USPS Priority Mail International: Delivery takes 1 - 2 weeks after we ship your package. This can sometimes take 3-4 weeks to several countries. The USPS provides some basic tracking information for Priority shipping.

(3) USPS Express Mail International: Delivery usually takes 5-10 business days after we ship your package. You will receive a tracking number with which you can track your shipment from USPS.com. Note: If you use this option, you must send us your phone number when you check-out or else your shipment will be delayed. This is required for international postal forms.

Again, these delivery times are NOT guaranteed by the US Postal Service. The most common reason for delays is slow customs inspection and clearance in your country, and can be very long, even for Express mail packages. Upon shipping your order, delivery delays are beyond our control, so do not leave us negative feedback or file a Paypal claim if your package is delayed. Delays are quite common but losses are very rare, so your patience/cooperation will be greatly appreciated.

Customs and Duties: You are responsible for any duties and taxes that may be levied in your country. These are not included in the item price or shipping cost. We have no control over these charges and cannot predict what they may be or if they will be levied upon delivery. Customs policies vary widely from country to country (Some countries such as UK are strict about imposing hefty customs duties). It is your responsibility to check with your country's customs office to determine what these additional costs will be prior to bidding or buying. Customs fees are normally charged by the delivery company or your country's postal service, or collected when you pick the item up. These fees are NOT additional shipping charges.

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5. RETURN/EXCHANGE POLICY

US Orders: We must receive any returns within 14 days from the time you receive it. A minimum restocking fee of 10% will be levied for all returns and exchanges. A larger amount will be deducted if there is evidence of use or wear, dirt, scratches, missing packaging/parts, etc. Shipping fees are non-refundable (for items with free shipping, the outbound S&H cost we incur will be deducted) and you are responsible for all return shipping costs. Please contact us first before returning an item.

International Orders: No returns/exchanges accepted unless the item we shipped is defective. Please research the product and ask us any questions BEFORE you purchase to make sure you are buying the correct item for your needs.

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