Twilight early summer doubles.

[cotterless45]

These are easily available this and next month as soon as some twilight falls. Either through their contrast, colour or difficulty, I've marked them down as being essential viewing.

Ursa Major.

23 UMa x50 delicate contrast.

Σ1415 x50

Σ1510. X100

Xi UMa. X266, nice tester 1.7" bright twins.

57 UMa x100

Σ1553. Χ50

Σ1561 x 50 contrast.

65 UMa lovely triple x100-150

Σ1600. Χ50

Σ1695 x150 3.8" contrast

Σ1770 x266 1.7" challenging

Σ1795 x100

Σ1831 x50 multiple

UMinor

Group of π1 x50

Leo

6 Leo. X50 colour !

ΟΣ 215 1.4" x160 near even pair

Algieba

Σ1447 x100 super contrast

49 Leo x220 2.1"

54 Leo

65 Leo

Σ1521 x220

Denebola

Leo Minor

Σ1374

Canes Venatici

2 CNV x50

Cor Caroli

Σ261 x150

Coma Berenices

Σ1663 x100

24 Cb x50

Σ1685. X50

35 Cb triple 1.2", 27.9" x220

Corona Borealis

Just worth finding, the Blaze star, ΤCrB

Sigma Cb x50

Bootes.

S656 x50

Eta Bootis x50

Σ1825 x100

Σ1835 x100

Izar x200

Σ1884 x220

39 Bootis Χ100

ΟΣΣ137 x50

Alkalurops

Hercules

κ Herculis x50

Σ2063 x50

Σ2085 x220

Σ2142

Rasalgethi x150

Sarin x100

ρ Herculis x50

ΟΣ329 x50

Σ2194 x50

Σ2245 x100

95 Herculis x50

ΟΣ 341. X50

Σ2401. x150

Σ2411 x150

I note that some folk give up in this most productive time of year, just a little patience and there's enough darkness for some pleasing sights,

Nick.

[Paul73]

Thanks Nick. The black bits are fast disappearing!

I'll have a crack at a couple of these this evening.

Paul

[John]

Great list Nick - thanks

No need to curtail observing just because we have to wait a bit longer for darkness. It helps to be retired though !

[jetstream]

Great list Nick, I just came in from viewing Izar- one of my goto favorite doubles. Used the dob and can't wait to get the 120mm frac on some from your list!

[Pig]

Brilliant Nick :smiley:Thanks for taking time out to arrange them all.

[marco-prunotto]

Zerochromat

Has anyone of you had a chence to review the zerochromat 8" F/12 scope on some double star?

Best regards,

Marco

Sent from my iPad using Tapatalk

[John]

Zerochromat

Has anyone of you had a chence to review the zerochromat 8" F/12 scope on some double star?

Best regards,

Marco

Sent from my iPad using Tapatalk

I can't think of a member here who owns one Marco.

I've not seen any reports on this scope apart from one owner on the "Cloudynights" forum as far as I recall.

Welcome to the forum by the way