Posts Made By: Jose Suro

Hi Yu Gu,

I am a rank beginner at this imaging thing and think both of your processed images are great, but the one on the left shows a lot more more detail - but also a stronger halo. Registax2 allows for stacking of both RGB and grayscale (luminace) images. In my limited knowledge from reading current articles, LRGB images seem to produce the most detail without the blue, red or yellow halos you see in a lot of images. The processing call for taking selected images and first making a grayscale image which is then aligned with all of the RGB images, including green. This I think minimizes halos on the right side of the planet. Green images in my limited experience hold quite a bit of information too. Once you add the grayscale image with the RGB, the blue portion of the image gathers a lot of detail as well by pushing the curves in PhotoShop. This LRGB thing is of course not my idea. Ed Grafton mentions it in a current Sky and Telescope issue and he produces consistently excellent images of Mars.

Your images are excellent nevertheless and I wish I could make mine as good.

Take Care,

Jose Suro
Tierra Verde, Florida

Hi Ivan,

This same issue was discussed at length in the Yahoo NexStar GPS group and the concensus is to use a VSE adpater #A2LT http://www.observatory.org/vpacs.htm in front of the reducer/corrector. This part goes into your telescope adapter ring. On the back of the corrector you screw in an SCT-thread to 2-inch adapter from Tele Vue, I believe the part numbers are ACC-0003 and ACS-0004 but not 100% shure. This allows the use of any 2-inch device behind the reducer/corrector.

Take Care,

Jose Suro
Tierra Verde, Florida

Just before the clouds returned I took a potshot at Uranus . This is a single image at the same scale as the Mars image above for size comparison purposes.

Take Care,

Jose Suro
Tierra Verde, Florida

Excellent shot Chris! Makes me look forward to getting my wedge.

Take care,

Jose Suro
Tierra Verde, Florida

Hi Roger,

Post your question at the NexStarGPS Yahoo group. You'll get a quick answer. A lot of very knowledgable people there have been all over the NS11.

http://groups.yahoo.com/group/NexStarGPS/

Take Care,

Jose Suro
Tierra Verde, Florida

Hi,

The thread did get a bit carried away but you did mention $2K or a bit more and 2 SCTs. You won't go wrong with a NS 9.25 GPS. I own a NS 11 GPS and it's a keeper.

Take Care,

Jose Suro
Tierra Verde, Florida

Excellent image on a difficult subject Mark! I'm very envious .

Take Care,

Jose Suro
Tierra Verde, Florida

This won't qualify but my biggest bang for the buck was going from a 6" to an 11" scope.

Besides that, Carl Zeiss, crown glass, Carat - fully multicoated eyeglasses for my astigmatism (special order and you have to sign a waiver). I don't wear them except for observing and at over $300 I treat them better than my eyepieces - which I baby. And the coatings look like those on eyepieces - greenish-pink.

Take Care,

Jose Suro
Tierra Verde, Florida

Hi,

Most electronic cameras (my Nikon included) will not work normally without the lens because the lenses are auto-focus and auto-focal ratio. If you try to use the camera in any of the auto modes the camera will just say its got some kind of error. You have to use the camera in full manual mode and just worry about exposure time (the focal ratio is fixed by the scope). You will need to estimate exposure times. With a full Moon, as with right now, and with ISO 100 film the exposure will be somewhere around 1/180 - 1/500 of a second on my F10 scope - your mileage might vary.

Take Care,

Jose Suro
Tierra Verde, Florida

Very very nice! Congratulations on such nice images. This is the best I could do on mine yesterday with my Olympus digicam.



Take Care,

Jose Suro
Tierra Verde, Florida