Coma Berenices

46958

Apr 9th, 2026

326

IC 3329IC 3332IC 3299IC 3296IC 3294IC 3288IC 3287IC 3283IC 3278IC 3300IC 3302IC 3304IC 3306IC 3308IC 3309IC 3316IC 3317IC 3321IC 3324IC 3276IC 3270IC 3269IC 3231IC 3230IC 3228IC 3222IC 3221IC 3219IC 3217IC 3216IC 3234IC 3237IC 3264IC 3263IC 3262IC 3249IC 3247IC 3243IC 3242IC 3241IC 3215IC 3460IC 3406IC 3403IC 3402IC 3401IC 3397IC 3396IC 3395IC 3394IC 3407IC 3411IC 3458IC 3454IC 3451IC 3450IC 3441IC 3439IC 3424IC 3421IC 3390IC 3389IC 3387IC 3353IC 3348IC 3345IC 3341IC 3338IC 3337IC 3336IC 3335IC 3362IC 3364IC 3385IC 3384IC 3380IC 3377IC 3376IC 3373IC 3372IC 3367IC 3334NGC 4275IC 3444IC 3415IC 3399IC 3375IC 3360IC 3351IC 3342IC 3323IC 3456NGC 4251IC 3297IC 3295IC 3285IC 3197IC 3178IC 3164IC 3145IC 3140IC 3125NGC 4427NGC 4426IC 3198IC 3214IC 3282IC 3277IC 3252IC 3251IC 3250IC 3248IC 3232IC 3226NGC 4311IC 3212IC 3194IC 3193IC 3189IC 3186IC 3185IC 3184IC 3179IC 3176IC 3195IC 3200IC 3210IC 3207IC 3206IC 3205IC 3204IC 3203IC 3202IC 3201IC 3172IC 3171IC 3169IC 3112IC 780IC 777NGC 4475NGC 4448NGC 4408NGC 4393NGC 4375IC 3116IC 3119IC 3168IC 3165IC 3154IC 3146IC 3144IC 3143IC 3135IC 3122NGC 4295

Resolution:: 6000x4000 px
File size:: 99125 KB

Show astrometry on hover

Photo description / processing

For an experiment, I shot with a crosshair made of threads. That's why the stars have rays.

Technical information

Telescope/Lens: Askar SQA55
Camera: ZWO ASI2600MC Duo
Mount: EQ6-R

Location: Barnaul, Russia

Light pollution

Gray, Bortle 2 zone

Exposure

185 × 120″ · ISO/Gain: 100

Total exposure: 6 h 10 m

Comments

Neb⁴⁰²⁹

6 hours is very little, especially since these are stars, not some galaxies or nebulae. Try to get at least 12 hours.

Jul 6th, 2026

dmclReply to Neb⁴⁰²⁹

I didn’t understand the part about “especially since these are stars, not some galaxies or nebulae.” These are stars. When talking about SNR on stars versus nebulae, the SNR is certainly higher on stars because they are bright objects. That means you need less integration time to achieve the same SNR, not more. The image was taken as a test of the Askar SQA55 with a crosshair.

Jul 6th, 2026

Neb⁴⁰²⁹Reply to dmcl

The entire message is sarcasm. When I saw the inscription "6h 10m," I was in shock, because I haven't accumulated that much light in my entire life. Plus, if I had spent that much time on just stars, it would have been the 6 most uselessly spent hours of my life.

Jul 6th, 2026

dmclReply to Neb⁴⁰²⁹

Understood.

Jul 6th, 2026