Best of AOP - Galaxies

NGC 4298 and NGC 4302

This vista of spiral galaxies illustrates the nature of these thin disks of material. NGC 4298 presents it spiral arms to us, a very tightly wrapped disk with spider web like dust lanes. NGC 4203 gives us its profile and typical obscuring dust lane for an edge-on galaxy. It is estimated that NGC 4302 is about the same diameter of our galaxy at around 97,000 light years (NGC 4298 is half the diameter). If we placed our galaxy at the same distance (60 million light years away) and view it from the same perspective, it might be difficult to tell the difference! Also note the small spiral to the right of these two galaxies. If this galaxy was the same size, it would have to be more than 5 times as distant.

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Last Updated: 02-Apr-2014

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About This Image

Click on image for larger version.

Equipment

20in RC Optical Systems telescope Operating at f/8.1

Paramount ME Robotic Telescope Mount

SBIG ST10XME CCD camera with color filter wheel

LRGB color production was used to create this image.

Only one guide at this plate scale- did not permit us to center this target.

One iteration of L-R deconvolution (sharpening) algorithm using CCDsharp was applied to the luminance image.

Digital Development (DDP) via Maxim/DL was also used in order to display the very dim and very bright details of

the image simultaneously.

Luminance = 90 minutes binned 1x1

Red = 20 minutes binned 2x2

Green = 20 minutes binned 2x2

Blue = 30 minutes binned 2x2

Minimum credit line: Jeff Hapeman/Adam Block/NOAO/AURA/NSF