20150320 solar
20150320 solar
Tasco 9VR 60mm F5 achromatic telescope
ZWO ASI 120MM camera
Processing s/w AS!2
Image left-right reversal
photo 1, CaK image : 394 nm 0.2nm & 4nm beamwidth double stack back filter
photo 2,3 Ha images : 656.28nm prefilter Coronado Solarmax II 40mm, back filter (Omega Ha 0.15nm beamwidth + built in ERF)
photo 4 Ha ds image : 656.28nm Prefilter Coronado Solarmax II 40mm, back filter (Omega Ha 0.15nm beamwidth + built in ERF & one Omega 0.15nm beamwidth thin Ha Etalon)
ZWO ASI 120MM camera
Processing s/w AS!2
Image left-right reversal
photo 1, CaK image : 394 nm 0.2nm & 4nm beamwidth double stack back filter
photo 2,3 Ha images : 656.28nm prefilter Coronado Solarmax II 40mm, back filter (Omega Ha 0.15nm beamwidth + built in ERF)
photo 4 Ha ds image : 656.28nm Prefilter Coronado Solarmax II 40mm, back filter (Omega Ha 0.15nm beamwidth + built in ERF & one Omega 0.15nm beamwidth thin Ha Etalon)
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Yes, the sme40 has a Richview tilting system on front end, l also tilted it both axis when the pc display showed me the sweet spot swept across the disk of sun during tuning, l stopped it on nearly perfect point or perhaps more. The focusing part l want to add up is for getting the stable focusing point prefer to hand control.Wah!! 寫:The tilt tune is not related to the focusing part, you may add another tuning axis for it.
solar image
Wah!! 請參考第二同第四幅圖,Wah!! 寫:Photo 2 seems the solarmax is not tuned tothe optimized angle, the sweet spot is on the far right edge of the sun.
第二幅是只加上sme40同一張冇tilting的omega厚身etalon, sweet spot 應該可藉着調節Richview的旋钮而平均整過畫面的光線分配(暫時我理解的sweet spot)。
第四幅是除以上的組合外,再在近焦點處加多一塊薄的及可遁着前後及旋轉的自制tilting omega Etalon.當時在畫面上出現很多衍射纹或唔知是否所謂Newton Ring,
但經As!2處理後消失,而且畫像亦好似仔细左,sweet spot 又好似平均化左。
你覺得怎樣?
solar image
Wah!! 請參考第二同第四幅圖,Wah!! 寫:Photo 2 seems the solarmax is not tuned tothe optimized angle, the sweet spot is on the far right edge of the sun.
第二幅是只加上sme40同一張冇tilting的omega厚身etalon, sweet spot 應該可藉着調節Richview的旋钮而平均整過畫面的光線分配(暫時我理解的sweet spot)。
第四幅是除以上的組合外,再在近焦點處加多一塊薄的及可遁着前後及旋轉的自制tilting omega Etalon.當時在畫面上出現很多衍射纹或唔知是否所謂Newton Ring,
但經As!2處理後消失,而且畫像亦好似仔细左,sweet spot 又好似平均化左。
你覺得怎樣?
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