{"product_id":"schmidt-cassegrain-telescope-sct-collimation-service","title":"Schmidt-Cassegrain Telescope (SCT) Collimation Service","description":"\u003c!-- more --\u003e\u003cp\u003eStop settling for soft stars or mushy planetary detail. If your Schmidt-Cassegrain no longer delivers sharp, high-contrast views even on nights of good seeing, misalignment of the secondary mirror is the most likely cause. At David Astro, we provide precision collimation to restore your SCT to factory-spec performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Shipping costs are not included. We recommend local drop-off to ensure alignment remains intact.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhy Professional Collimation Matters\u003c\/h3\u003e\n\u003cp\u003eAn SCT typically works at f\/10 with a strongly magnifying secondary mirror, which amplifies even a tiny tilt into visible loss of sharpness. Because collimation is judged on a star at high magnification, it is difficult to get right without a controlled setup and steady conditions. Our technicians address every element of the optical path:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Mirror Alignment:\u003c\/strong\u003e We adjust the secondary so that the out-of-focus star pattern is perfectly concentric, then refine it in focus at high power.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorrector Plate Check:\u003c\/strong\u003e We verify that the corrector is seated, centered and in its factory rotation index, since an incorrectly positioned corrector degrades the image in ways collimation alone cannot fix.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Mirror and Focus Mechanism:\u003c\/strong\u003e We check the focus mechanism and mirror locks (on models so equipped) to make sure the primary holds its position once focus is reached.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAbsolute Optical Perfection:\u003c\/strong\u003e We align every system to its highest theoretical limit, ensuring maximum contrast for both high-magnification planetary viewing and deep-sky astrophotography.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOur Comprehensive Service Includes:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArtificial Star Testing:\u003c\/strong\u003e We collimate on an artificial star at high magnification, independent of weather and seeing, for repeatable, precise results.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMirror Flop and Image Shift Check:\u003c\/strong\u003e We evaluate how much the image shifts when focusing and when the tube changes orientation, and advise on solutions such as mirror locks or an external focuser.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptical Path Audit:\u003c\/strong\u003e We inspect for loose baffles, pinched optics, a loose secondary holder or worn collimation screws that a standard collimation might miss.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEducational opportunity (optional):\u003c\/strong\u003e Touching up collimation is a normal part of owning an SCT. We will walk you through the star test and the secondary adjustment so you can maintain optimal performance on your own.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs it time for a service?\u003c\/h3\u003e\n\u003cblockquote\u003e\n  \u003cp\u003eIf a slightly defocused star shows a \"donut\" with the dark shadow off-center, if bright stars show flares or tails when in focus, or if planets never snap into sharp focus, your optics are likely misaligned. Transport, bumps and temperature swings are the leading causes of SCT misalignment.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003cp\u003eCompatible with Celestron and Meade Schmidt-Cassegrains, including EdgeHD and ACF models.\u003c\/p\u003e\n\n\u003cp\u003eTrust David Astro to fine-tune your equipment, ensuring that every stargazing session is as breathtaking as possible.\u003c\/p\u003e","brand":"David Astro","offers":[{"title":"Default Title","offer_id":52964348428573,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":true}],"url":"https:\/\/davidastro.com\/fr\/products\/schmidt-cassegrain-telescope-sct-collimation-service","provider":"David Astro","version":"1.0","type":"link"}