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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Registax V1.1beta Download +사용 관련 팁과 이미지 프로세싱 테크닉
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RC Optical의 Gallery
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PlaneWave CDK 아스트로그래프
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Orion 자리 모자익...
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Orion DEEP FIEDL
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Nikon D70 으로찍은 안드로메다은하, 오리온자리 대성운...
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NGC5907
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NGC1300 허블
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NGC 7331 - Tony Hallas
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New CCD Astronomy
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NASA APOD 한글버전
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MT200 돕소니안
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Mosaic of Crab Nebula (by HST)
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Meade RCX400으로 찍은 사진들..
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Martin's Black and White Film Deep-Sky Astrophotography
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mars_05_31_03
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Mare Crisium
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M81 흑백사진
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m8 HaRGB
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M57과 주변은하