Thread: M48X0.75. Extension Tube is made of aluminum alloy, durability and light weight. 1 x Extension Tube. Weight: about 5-50g.
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Budget Astrophotography by Timothy J. Jensen. The introduction of the CCD revolutionized astrophotography. Specialized cooled-chip CCD imagers are capable of superb results in the right hands – but they are all very expensive.
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The #12 Yellow Filter from Tiffen is a filter designed to increase contrast and tonal separation for black and white photography. The filter absorbs blue colors, rendering blues darker. Haze is minimized for aerial photography and excessive blue is removed for astrophotography.
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Model: StarScape. Can be used with wide-angle lenses without vignetting or uneven colors. Genuine Marumi filter. New MARUMI 77mm Macro 3 Filter. Size: 55mm. Blocks light pollution to enhance the colors and contrast of night sky and nightscapes.
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The Askar 71F adopts a quadruplet air-spaced APO lens design, including one piece of ED glass, which can effectively reduce chromatic aberration. The dew shield of the Askar 71F is a retractable design, further shortening the overall length and increasing portability.
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QHY533M (mono) and QHY533C (color) have different interface designs to be more flexible to deal with different applications. QHY533M can be directly connected to the QHYCFW3S-SR without removingany part of the filter wheel (like the filter container).
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Large external thread: M54 0.75mm. Small external thread: M42 0.75mm ( T2 thread). Internal thread: M48 0.75mm (suitable for connecting the filter).
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Farbe: rot schwarz. Material und Stabilität: CNC-gefräste Aluminiumlegierung, leicht und dennoch vibrationsarm, geeignet für langbelichtete Deep-Sky-Fotografie.
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