It was taken with the 14.5" f/8 Classical Cassegrain from 2500 foot elevation in my backyard observatory near Foresthill, CA. ST-10E camera (the one you sold me, not an ME) with off-axis guiding through an STV. Average error this night was .3 at 3000mm focal length on the read out ... graph looked almost like a straight line! I took a total of 6 - 25 minute exposures with the clear filter (not the IR cut-off clear). Images were debloomed with CCDOPS, converted to floating point IEEE FITS in MaxIM, reduced in MaxIM and aligned, blended in Sigma, converted to 16 bit Tiff in MaxIm, opened in PS with curves and did a little cleaning up with PS. This is essentially a quick and dirty image to see what I got ... final version coming, hopefully in color...shot 180 minutes of blue data last night ... same awesome seeing.
NGC 7331 - Tony Hallas
It was taken with the 14.5" f/8 Classical Cassegrain from 2500 foot elevation in my backyard observatory near Foresthill, CA. ST-10E camera (the one you sold me, not an ME) with off-axis guiding through an STV. Average error this night was .3 at 3000mm focal length on the read out ... graph looked almost like a straight line! I took a total of 6 - 25 minute exposures with the clear filter (not the IR cut-off clear). Images were debloomed with CCDOPS, converted to floating point IEEE FITS in MaxIM, reduced in MaxIM and aligned, blended in Sigma, converted to 16 bit Tiff in MaxIm, opened in PS with curves and did a little cleaning up with PS. This is essentially a quick and dirty image to see what I got ... final version coming, hopefully in color...shot 180 minutes of blue data last night ... same awesome seeing.
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필름을 주로하다 요즘 CCD에 입문한 토니의 이 대단한 사진을 보고 CCD를 죽~ 해온 몇사람들이 이사진은 왜곡이 많이 되었다고 딴지를 걸었네요.
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눈이 튀어 나온 것을 주워 담았습니다.
어떻게 이런 사진이 가능한지 원....
근데 왜곡이라고 하셨는데 딴지의 내용좀 알 수 있을까요?
오늘은 날이 좋아질 것 같은데 오후에 기상 예보봐서 여지 없이 번개입니다.^^ -
참고삼아 지금까지 그럭저럭?? 잘 나왔다는 다음의 7331 사진과 비교해 보시면 왜 논란이 되는지 짐작이 되실듯..
http://www.noao.edu/outreach/aop/observers/n7331.html -
Indeed!
I spent a little time with that 7331 image and must conclude that it
has been extensively modified to an "artwork" of significant
scientific questionability. It is evident that he used non- algorithmic techniques (e.g. burn-&-dodge, blended masks) to elevate
the brightness of the surrounding galaxies & redistribute 7331's
internal intensities. But perhaps the strangest aspect of it is a
severe geometric distortion that is not likely present in his raw
data (unless his scope is really "whacked out" <g>), presumably a by- product of his Photoshop manipulation. I have to say that I am
personally uncomfortable with this level of "creativity"...
Stan Moore -
왜곡이고 머고를 떠나서 그냥 입이 벌어지네요. 열정인가요? 장비인가요?
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ST-10E가 가이드칩이 내장되지 않은 모델인가요?
off-axis 가이드 칩으로 STV를 썼네요..
제 경우 Stan Moore의 코맨트는 납득은 가돼 동의할 수는 없을 것 같습니다.
"creativity"...란 용어는 그려 넣었다는 것인데 글쎄요... -
내장되어 있습니다. 허나 재력만 된다면 따로 쓰는 것이 편합니다. ^^
저도 STV가 있었으나.. ST10은 사느라고 팔았는데, 그만큼 좋은 오토 가이더는 아직까지 없었습니다.
천문 사이트 Links
외부 사이트들의 좋은 정보 등을 같이 읽어봅니다.
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재미있는 동영상 하나
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Orion DEEP FIEDL
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M45 라지포맷CCD - STL11000
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선혈이 낭자한 오라이언자리 모자익
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극축오차로 인한 필드회전량 계산
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아름다운 월식사진 한장
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SBIG large format CCD 사진-코쿤
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Richard Crisp의 deepSky사진들...
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신형 다카하시 핸드 콘트롤러
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Martin's Black and White Film Deep-Sky Astrophotography
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EOS 10D 천체사진
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젠들러씨의 M33
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Orion 자리 모자익...
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Gum1성운과 ME Spike 제거 툴
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[re] Meade RCX400으로 찍은 사진들..
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Images with NHK HDTV Camera
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Ed Grafton의 화성사진
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NGC 7331 - Tony Hallas
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드디어 Cooled 5D markII 가.. !!
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TEC 의 300mm f/1.44 아스트로그래프