1 / 1

F/3.5

R-spec 2002.6.25 H.Akitaya. φ0.1mm (φ15”). F/3.5. F/1.3. 38.6 mm. F/3.5. f1 = 20 mm. 600 gr/mm 500nm blaze. fcoll = 135 mm (F/2). fcam =50 mm (F/1.2). f2 = 80 mm. CCD Camera. Video Camera. Fiber image size Φ37μm (4.1 pix) Sampling rate 0.33 pix/Å(3Å/pix)

tracy
Download Presentation

F/3.5

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. R-spec 2002.6.25 H.Akitaya φ0.1mm (φ15”) F/3.5 F/1.3 38.6 mm F/3.5 f1 = 20 mm 600 gr/mm 500nm blaze fcoll = 135 mm (F/2) fcam =50 mm (F/1.2) f2 = 80 mm CCD Camera Video Camera • Fiber image size • Φ37μm (4.1 pix) • Sampling rate • 0.33 pix/Å(3Å/pix) • Wavelength resolution • Δλ～12.3Å • Wavelength Coverage • ～2300Å(4600-6900Å) 視野 238” x 178” (0.3” x 0.4” /pixel) • CCD • ST-7 • 765 x 510 pixels; 9μm sq. • Fiber core • Φ=100μm • Telescope • D=40cm, F/3.5 • 147.3”/mm at foal plane • Video Camera • 768 x 494 pixels; 8.4 x 9.8μm • 波長分解能のさらなる向上には・・・ • カメラレンズの焦点距離をさらに短くする • （×＝そのような明るいレンズは存在しない） • ファイバー径を小さくする • （×＝0.1mm径がほぼ限界らしい） • 大きなCCDを使用、グレーティングの溝数を増やし分散を上げる • （△＝CCD高価） • エクステンダーレンズを使い望遠鏡光のF比を大きくし、コリメータレンズの焦点距離を増やす。 • (○＝望遠鏡F/3.5→7, fcoll 270mm で　CCD上のfiber image size 半減、Δλ～6Åに。収差の小さいレンズの選定 or 設計・製作が必要)

More Related