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Horsehead Nebula

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Posts Made By: James Brown

December 31, 2009 03:07 AM Forum: CCD Imaging and Processing/Deep Sky

M45

Posted By James Brown

Hi all:

It's been about a month since anyone has posted a M45 image. wink Here is my go at this beautiful object. I might try to re-process to minimize the bright star halos, but I might not. The halos don't bother me much and I don't want to dilute the reflection nebulosity. This is basic LRGB processing with 5 minute subs. A full-sized clickable version is here:

http://home.comcast.net/~jameslbrown/pwpimages/M45%20LRGB.jpg


I hope you enjoy one more M45! Thanks for any comments.

Jim


TEC APO 140
TEC Field Flattener
Astro-Physics Mach 1 Mount
Finger Lakes Microline 11002 M, 2” Filter Wheel and PDF
Starlight Xpress Lodestar with Borg 50mm f5 Achro guide lens.
Astrodon LRGB Filters, Baader Narrow Band Filters
Maxim DL 5, CCD Commander, The Sky 6, Photoshop CS2, Focusmax



December 31, 2009 04:00 PM Forum: CCD Imaging and Processing/Deep Sky

Cederblad 214

Posted By James Brown

Hi all:

The following images are of Cederblad 214, a relatively low surface brightness emission nebula in Cephus.

You might recall that I have been puzzled by the variation in jpeg presentation between my computer at work and my computer at home, when viewing images of dim objects. Astromarters Enrico Africa, Charles Hakes and others have offered excellent tips for making sure the colors of my high resolution 16 bit tiff images stay "right" when I convert to 8 bit jpegs. I think I have that part of the puzzle solved. Thanks guys!

I am still having black point issues though.

If you have a moment, take a look at the two images I’ve attached to the next posts. The first one looks nice on my calibrated monitor at home. This image is clearly and tragically black-point clipped at work, in other words the fainter nebulosity right up to the edge of the frame on the N, SW and W is gone and only the central nebulosity shows.

The second image has substantially boosted gamma (about 1.4) I also boosted the overall brightness a bit. At work this one looks like #1 does at home. At home this image is way too bright though!

If you guys could let me know which version is more aesthetically appealing on your monitors, that might help me figure out whether my home system is out of whack, or whether I should just quit looking at these on my work monitors.

Thanks for any input you might have! I’m heading up to the mountains this evening, but I will read all replies carefully on Sunday. Have a great New Years!

Jim

January 8, 2010 04:03 PM Forum: CCD Imaging and Processing/Deep Sky

M33

Posted By James Brown

Hi all:

I took the LRGB data for this M33 image in September and October. As you know if you have read the Cederblad thread and another before it, I have had a heck of a time processing this data to preserve the subtle outer regions of the galaxy.

With your help I have adjusted my computer at home, embedded a sRGB profile in this image and tried InfanView for jpeg conversion. I am pleased with the results and very grateful for all of the help from this forum!

This image is LRGB with (20) 15 minute L subs binned 1x1 and (20) each 5 minute RGB subs binned 2x2. I de-saturated the colors a bit in final processing to achieve a more subtle look that I like.

The full res image is here, I really have enjoyed spotting tiny galaxies in the background. South is up in this image, I guess I like the way it looks better that way.

http://home.comcast.net/~jameslbrown/pwpimages/m33LRGB%20cropped%208bit.jpg

TEC APO 140
TEC Field Flattener
Astro-Physics Mach 1 Mount
Finger Lakes Microline 11002 M, 2” Filter Wheel and PDF
Starlight Xpress Lodestar with Borg 50mm f5 Achro guide lens.
Astrodon LRGB Filters, Baader Narrow Band Filters
Maxim DL 5, CCD Commander, The Sky 6, Photoshop CS2, Focusmax

Jim

March 1, 2010 11:23 PM Forum: Politics

Mitch the Knife

Posted By James Brown

Some of the lefties here and many in the press are fond of pre-anointing Sarah Palin as the GOP candidate in ’12. A few have posted something along the lines of “Well, who else do you have?”

Mitch Daniels has all but said that he will not run, but the door is a little open and swinging wider. If the quantity of on-line and news discussion is any indication, interest in a Daniels run is on the hard upswing. Might be an interesting choice.

Are we ready to consider a very competent, but very short and un-glamorous president?

Jim

http://www.politico.com/news/stories/0210/33561.html

http://www.nytimes.com/2010/03/01/opinion/01douthat.html?ref=opinion

http://online.wsj.com/article/SB10001424052748704231304575091600470293066.html?mod=WSJ_Opinion_LEFTTopOpinion

March 10, 2010 04:57 AM Forum: CCD Imaging and Processing/Deep Sky

Orion Widefield

Posted By James Brown

Hi all:

This 36 degree by 24 degree image of Orion and part of Monoceros is my first light for a 55mm Pentax 67 camera lens at f5.4. The lens is coupled to a FLI Microline 11002M, CFW-7 filter wheel and PDF focuser.

I was inspired to try the Pentax 67 medium format lenses by Richard Crisp who has imaged extensively with this lens family and FLI products. Thanks Richard!

The Pentax 67 family of lenses makes a lot of sense for me, because the field flattener of my primary refractor requires 85 mm between the back of the flattener and the image plane. 85mm was selected by the lens designer so that the refractor/field flattener could be used with a Pentax 67 medium format film camera body, which requires 85 mm of back focus.

85 mm is a lot more than the back focus of a 35mm format lens. With a 35mm lens it would be difficult or maybe impossible to use a ccd camera, filter wheel and PDF type focuser after the lens, there just isn’t enough back focus room. However, the Finger Lakes Instruments focuser and wheel, plus the distance from the front of the chip to the front of the camera are less than 85mm. So, to make a long story short, I have made one adapter that attaches my camera/wheel/focuser system to the refractor/field flattener and another adapter that attaches the same imaging gear to any Pentax 67 lens. Now, I can keep the camera, filter wheel and focuser more or less permanently hooked together and easily select a camera lens or the telescope. I made a simple platform that holds the camera and mini-Borg guide scope when imaging with a camera lens.

This particular image is only 20 minutes of L, in 2 minute subs and 120 minutes of Ha; 30 minute subs. The moon, plus the moon reflecting off of snow, plus Denver's light dome made for some very dramatic gradients! I am very pleased with this for first light given that I have so few subs. The full resolution version is here:

http://home.comcast.net/~jameslbrown/pwpimages/new%20final.jpg

Take a look around and you will see that the well known objects in this field (M42, The Rosette, The Horsehead/Flame) are reasonably well rendered, given the extremely wide image scale.

The Pentax 67 lenses are quite affordable on the used market; I'm looking forward to using this versatile system with a few different focal lengths.

Thanks for looking!

Jim

March 12, 2010 02:05 AM Forum: Religion

Objective Reality

Posted By James Brown

John Agnew asked Doug down below:

Why is it that you feel so threatened by reality?

John:

I think that I can answer this for a lot of folks, if not for Doug specifically. My answer is founded in a lot of personal thought and experience and also quite a few years of correspondence with Chris Nicholl, Eric Gage, James Lacey and others who are/were on this forum and who are deep thinkers when it comes to reconciling Christianity with scientific reality.

The last stuff I read of Eric’s (on another board) suggested that he is presently in an agnostic frame of spirituality. You will recall that he had recently broken with his fundamentalist upbringing when he first started posting here several years ago. His spiritual life is a broad arc. He could add a ton to the points I’m trying to make in this essay. I’ll see if I can get an update from Eric later.

In any case, my guess is that Doug must ignore the overwhelming scientific reality of evolution because at a subconscious level he is profoundly afraid that any crack in the monolithic wall of scripture, no matter how slight, will inevitably propagate, split and grow until his entire faith collapses. My guess is that if Doug admits to himself at a conscious level that evolution is valid and Genesis is myth or parable, then how can he be sure that Christ died for our sins, and how he can be sure that he has actually been given the gift of faith and salvation as he described yesterday? In his view, if you give an inch, the next thing you know you’ll be giving a mile. And that leads to doubt, and doubt leads to atheism.

You know what? Doug has a point. To be a traditional Christian and an amateur scientist is not so easy. Obviously I embrace evolution as the mechanism of speciation as much as the rest of you do. I read with fascination the latest cosmological findings. I think the universe is billions and billions of years old. I have never thought that there was literally an ark, or a flood. What about the burning bush and the stone tablets? Well, I guess that is probably myth too. How about the wedding in Canaan, turning water into wine, or the fishes and loaves? True or false? It beats me.

Which obviously gets us to the biggie. The heart of Christianity, (as taught in Church anyway), is that Christ died and rose again. Can one believe that is true if one doubts the loaves and fishes? Can one be Christian if he isn’t sure about a factual resurrection?

You see the pickle Doug is in. If he acknowledges that Genesis is myth, what falls apart next? A lot of Christians, and I would usually have more or less include myself in this group, are happy to accept the Old Testament as parable and myth and the New Testament as basically factual. Still, I’m an analytical and reasonably intelligent guy. I have to admit that this is a terribly arbitrary way to draw the line. The only hard courtroom type evidence I have for either Testament is the texts themselves, so why endorse one as history and accept the other as myth? Uh-oh, is that the goat path I see ahead?

I’ve reached mental détente on these big issues, for now, and this is something Eric Gage and Mother Teresa both had a lot to do with. The answer to the problem for me is:

“Don’t worry about it too much.”

Eric helped, because a lot of his writing showed that the important stuff in Christianity was hardly blind allegiance to the authenticity of scripture. No; the important stuff is living according to Christ’s example. Unfortunately, that kind of thinking probably gets me excommunicated if I mention it to the Bishop.

Mother Teresa helped, because it was revealed in correspondence released after her death, that she was wracked with doubt her whole life. If such an obviously saintly woman can deal with doubt, so can I.

So, to get to the heart of this essay, which really isn’t about Doug after all, I still consider myself Christian because I try to live according to Christ’s example. I have no idea if the New Testament is historically accurate. I am positive that Genesis etc. is myth and parable. More importantly though, I feel God as a presence in nature, in the universe. This, in my view, is a self-authenticating truth as Eric described many years ago. Unfortunately that thread is gone. I am open to the possibility that my heart-feelings are self delusion or simple neural mis-wiring. It feels even more real to me now though, than it ever did before.

I still attend the Church of my ancestors, even though I vehemently disagree with several of the Church’s formal positions. That’s no big deal for me, I’m comfortable there and I don’t make waves in real life.

No doubt, if Doug had read this far, he is thinking that I am damned the same as Gary, Clyde you, (John) or the rest of the atheist crowd. And that in the final analysis is why Doug can not embrace evolution. He is afraid that to do so is the first step on an inevitable path to damnation. So I guess we have to give Doug a break. In Doug's view, the stakes are pretty high.

In any case, if there is heaven, I expect to see you all there because you seem to be good souls. I personally think that God is a “different strokes for different folks” kind of deity, who certainly would not be offended that we use the intellect we have evolved.

Jim

April 7, 2010 03:13 PM Forum: Religion

Bad Karma

Posted By James Brown

For you non-believers; consider the following 100% factual story:

At 8:50 A.M. yesterday, I posted the following:

"Anyway, based upon my own driving habits and those I observe around me, finding someone to ticket for moderate (about 10 mph over) speeding has to be about the easiest thing in the world, so why mess around with dicey fact situations if you want to write a lot of tickets?"

http://www.astromart.com/forums/viewpost.asp?forum_post_id=710440&poll_id=&news_id=&page=

Little did I know that about 15 minutes later, my know-it-all 17 year old son would acquire his first speeding ticket for going about 80 mph in a 65 mph zone. Fortunately, the cop wrote the ticket down to 74 in a 65, to minimize the points.

Dad is not pleased.

God is laughing his butt off.

J

April 13, 2010 02:46 PM Forum: CCD Imaging and Processing/Deep Sky

The Ten Millionth M42

Posted By James Brown

[SIZE="Large"]"You realize that there are some people out there think the guy who really needs to get a life is the astroimager out there spending ten thousand dollars on equipment to take the ten millionth picture of M42" [/SIZE]

A. McConahay 3/10/10





I gotta agree with Alex's tongue in cheek wisdom, but I still can't resist posting my M42. I'm always posting these "late" in the season, because Denver sits just to the East of me and I can't image until an object is transiting or setting to the West.

This rendition includes 10 sub-frames each of Ha, OII, R, G and B at 15 minutes and 10 sub-frames for each filter at 2 minutes. I also took 20 L frames at each time interval and used maybe 17 of them/per time interval. It all totaled up to about 130 sub-frames and slightly over 19 hours of imaging time. Fortunately I have CCD Commander dialed in, so I was able to image all night over the course of a few January to early March days.

I just upgraded my old laptop, and that made a ton of difference as far as being able to process all of this data.

The processing is basically an LRGB with Ha supplementing the Red and L channels and OIII supplementing the Blue, Green and L channels too. As you guys know, I had to process the nebula core and interior separately to avoid washing out the brighter parts. This was a real project, with a ton of processing choices.

But I like the results, hopefully you do too. Thanks for any comments.

A full sized jpeg is located here:

http://home.comcast.net/~jameslbrown/pwpimages/Final%203.jpg

TEC APO 140 with flattener, FLI Microline 11002M, FLI wheel and focuser, Baader filters, Astro-Physics Mach 1, Maxim DL, Photoshop CS2, CCD Commander, Focus Max.

Jim

May 7, 2010 02:46 PM Forum: Politics

Re: Pelosi urges priests to preach political messa

Posted By James Brown

Scott Satko said:

It seems that Pelosi has been busy urging Catholic priests to preach from their pulpits about immigration reform, encouraging their parishioners to support it.

http://politics.foxnews.mobi/quickPage.html?page=23888&external=279560.proteus.fma

Now, whether you're for or against the Democrats plan for immigration reform, isn't the act of the gov't telling a religious organization to preach a politically-motivated message something that we're not supposed to be doing in this country? Can you imagine the outrage there would have been if GWB had asked Protestant leaders to convince their congregations to support any of his policies? Haven't we all heard about churches being threatened with removal of their tax-exemption status if their pastors failed to cease preaching politically-oriented messages (always ones in favor of the "wrong" party, of course)?

Hi Scott:

I attend a Catholic church, so I can add one front line observation. In my experience you are far far far more likely to hear an anti-abortion sermon at a Catholic mass than a pro-immigration sermon. Although Catholics split about 50/50 Republican/Democrat (just like the rest of society) Pelosi and other pro-choice Democrats are routinely despised by Catholics. I don't think that you have to worry too much about the Democrat's controlling the Catholic message. Sure, priests tend to be liberal on most issues, but the Church still takes the abortion issue fairly seriously.

Jim

June 15, 2010 03:05 PM Forum: Landscape Photography

Manarola Italy

Posted By James Brown

This is the town of Manarola, one of five sea-side villages of the Cinque Terre on the North Western coast of Italy. The villages are connected by footpath and train, but the trains are recent additions and almost entirely located in underground tunnels. The views from the various footpaths are simply spectacular. This region is very popular and I understand that it is terribly crowded with tourists in July and August. In the first week of June we were pleasantly un-crowded and the weather was hot sunny and generally superb!

Jim