Across
Salvage extremely rare celestial object (7)
I haven't cracked this one yet — but Fifteensquared have:
The “extreme” letters of RarE CelestiaL + AIM (object)
Look after the issue for others (4,3)
Diving attacker received trivial sum, initially for throwing game (5)
Endeavour to capture contact linked to English betrayal (9)
I haven't cracked this one yet — but Fifteensquared have:
REACH (to contact) + E in TRY (endeavour)
Pee twice, say, when going off — it's that simple (4,5)
Plan to gather information for show trial (5)
I haven't cracked this one yet — but Fifteensquared have:
I[nformation] in PLOT. A pilot could be a trial of a TV show
Lure agency worker to join top table (5)
Investigator locates married American friends in Arab country (9)
I haven't cracked this one yet — but Fifteensquared have:
M[arried] BUDS in OMAN
Spread discharge — it's all over now (4,5)
Key type added on to register (5)
I haven't cracked this one yet — but Fifteensquared have:
To LATCH ON is to register – Anto often tends to use clues like this that seem to work the wrong way round
Piece in cited literature about accent (5)
Plenty in favour of merger (9)
Air sounds freaked out such old fogeys (9)
Current source of master's trendy interior (5)
I haven't cracked this one yet — but Fifteensquared have:
IN (trendy) in MA’S
Artificial servant picked up after staff (3-4)
Case has one placed in clear folder? (7)
I haven't cracked this one yet — but Fifteensquared have:
I in PATENT (obvious, clear)
Down
Split over irregular decree that's basically worthless (3,4)
I haven't cracked this one yet — but Fifteensquared have:
Alternate letters (irregular?) of DeCrEe in RENT
Church is smart shifting this festival (9)
Sit up after a tale from him, perhaps (5)
I haven't cracked this one yet — but Fifteensquared have:
A + reverse of POSE
Desperate men head to addiction treatment (9)
Two insects left out? That's powerful (5)
I haven't cracked this one yet — but Fifteensquared have:
BEE + FLY less L
Reconsider second exercise over youngster getting upset (4,5)
Take time to get in close (5)
I haven't cracked this one yet — but Fifteensquared have:
T in SEAL (to close)
Attempt to give fitting advice when clothes shopping (3,2,2)
Arrange dates here in the Middle East (3,3,3)
Cheers when getting to the end of the drink (7,2)
Bedding edge will do for mother, they say (9)
Pools found on embankment at historic conference site (7)
Communication equipment created by worker group (7)
Material name added to charge (5)
I haven't cracked this one yet — but Fifteensquared have:
I’m not sure if this is N in LIEN (a legal charge?) or LINE (charge as in “line one’s pockets”?)
Hesitate when seeing father sitting on facility (5)
Core of county police force not satisfied (5)
Type letters or click words in the clue