Sharpstar
SHS-140PH
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365ASTRONOMY TESTING PROCEDURES
We would usually test about 30 - 60% of the arriving Sharpstar and Askar telescopes (except the smallest ones in the FMA and ACL range). This will provide us with a good understanding of the quality of that batch of optics. We would also test the focuser and check the optical tube, tube rings and dovetail bar and accessories for any visible damage or fault and take a series of test images with a full frame dSLR camera of a specially designed test chart that will show whether the telescope is fit for a full frame sensor or not, whether the image is flat in all corners and generally it will indicate the quility of the optics, i.e. resolution. Whilst we do store this information for all tested telescopes, we don't usually include a printed report, but if you ask, we might be able to send it to you). If we find that the optics are not correctly collimated then we will send them to a specialist to correct it or if the optics cannot be corrected to a good performance then those will be sent back to the manufacturer for replacement, although our experience with Sharpstar and Asker telescopes is quite good, we rarely had to do that. We believe that there is no need to offer complicated optical test reports that would assume a degree in optical sciences from the user to fully understand them.
• 140MM f/6.5 three-element full separation (air spaced) optical design
• Dual ED ultra-low dispersion glass
• Multi-layer coating
• 4" dual-speed rack and pinion focuser, 10:1 fine focus
• 2" and 1.25" universal interfaces
• Angle adjuster for 360 degree rotation
• Dovetail bar with tube rings
• Comes with a finderscope shoe
• Hard case included
Above image: with fully opened lens shade.
Above image: with retracted lens shade.
SharpStar 140PH 140mm f/6.5 Dual ED Triplet APO
SHS-140PH
Tax included. Free UK Shipping - Estimate US & Europe Shipping at checkout.
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